Sources
All citations
Numbered in the order they first appear on this site. Figures come from the ISAE white paper (Oct. 2026) and its public research. Calculations labeled “our calculation” are simple arithmetic on cited figures. All URLs accessed October 2026.
- Congressional Research Service, Understanding the FY2026 DHS Budget Request (R48704, Sept. 2025), describing Pub. L. 119-21 (the 2025 reconciliation act): $45 billion for ICE detention capacity and $29.85 billion for enforcement and related activities, available through FY2029. https://www.everycrsreport.com/reports/R48704.html
- TRAC Immigration, "Quick Facts" (data current as of July 11, 2026): 65,765 in ICE detention; 46,436 (70.6%) with no criminal conviction; 183,181 monitored in ATD. https://tracreports.org/immigration/quickfacts/
- U.S. Immigration and Customs Enforcement, Budget Overview, Fiscal Year 2025 Congressional Justification (DHS, 2024). Adult bed cost per day FY2023 actual $187.48 (performance measure table); ISAP IV FY2023 cost $4.11 per participant per day; ECMS caseload of no more than 40 participants per case specialist; ECMS at about one-sixth the cost of FCMP; ATD ADP of 274,845 in FY2023; absconder rates of 16.2% (FY2021), 8.1% (FY2022), 12.8% (FY2023); site tiers; 1–5 risk score. https://www.dhs.gov/sites/default/files/2024-04/2024_0308_us_immigration_and_customs_enforcement.pdf
- U.S. Department of Homeland Security, "DHS Announces Historic Travel Assistance and Stipend for Voluntary Self-Deportation" (May 5, 2025). https://www.dhs.gov/news/2025/05/05/dhs-announces-historic-travel-assistance-and-stipend-voluntary-self-deportation
- Institute on Taxation and Economic Policy, Tax Payments by Undocumented Immigrants (July 2024). https://itep.org/undocumented-immigrants-taxes-2024/
- Stephanie Zappelli and Melissa Chavez, "ICE agents detain 114 people on Central Coast during weeklong operation," San Luis Obispo Tribune (Oct. 13, 2026) (counts per 805 UndocuFund; includes DHS statement and interview with a Guadalupe resident). https://www.sanluisobispo.com/news/local/article317562167.html
- "ICE Activity Ramps Up on Central Coast as Election Approaches," Santa Barbara Independent (Oct. 9, 2026). https://www.independent.com/2026/10/09/ice-activity-ramps-up-on-central-coast-as-election-approaches/
- American Immigration Council, Mass Deportation: Devastating Costs to America, Its Budget and Economy (Oct. 2024). https://www.americanimmigrationcouncil.org/report/mass-deportation/
- Penn Wharton Budget Model, Mass Deportation of Unauthorized Immigrants: Fiscal and Economic Effects (July 25, 2025), Tables 2–4. https://budgetmodel.wharton.upenn.edu/p/2025-07-25-mass-deportation-of-unauthorized-immigrants-fiscal-and-economic-effects/
- Jack Dindia, "ICE Detains Parent of Student on Allan Hancock College Campus," Noozhawk (Oct. 5, 2026). https://www.noozhawk.com/ice-detains-parent-of-student-on-allan-hancock-college-campus/
- "Hancock clarifies ICE protocol after campus detention, outlines support for immigrant students," Santa Maria Times (Oct. 2026). https://santamariatimes.com/news/local/hancock-clarifies-ice-protocol-after-campus-detention-outlines-support-for-immigrant-students/article_b79ca227-6908-4642-a89e-37d373c52596.html ; see also "Community leaders speak against ICE action on Hancock's Santa Maria campus" (Oct. 5, 2026). https://santamariatimes.com/news/local/community-leaders-speak-against-ice-action-on-hancocks-santa-maria-campus/article_e0525b87-b0e7-4b5c-905e-71d66b5cce3b.html
- "State Releases New Guidelines for Immigration Enforcement on School Campuses," Santa Barbara Independent (Dec. 30, 2025). https://www.independent.com/2025/12/30/state-releases-new-guidelines-for-immigration-enforcement-on-school-campuses/
- Thomas S. Dee, "Recent immigration raids increased student absences," Proceedings of the National Academy of Sciences (2025). https://www.pnas.org/doi/10.1073/pnas.2510395122
- "DHS confirms 361 people detained in Carpinteria and Camarillo raids at Glass House Farms," KEYT News Channel 3-12 (July 14, 2025). https://keyt.com/news/santa-barbara-s-county/2025/07/14/fallout-from-federal-law-enforcement-operations-in-central-coast-region-continue-monday/
- "Federal Agents Raid Carpinteria Cannabis Farm, Deploy Smoke Grenades Near Crowd," Noozhawk (July 10, 2025). https://www.noozhawk.com/federal-agents-raid-carpinteria-cannabis-farm-deploy-smoke-bombs-on-crowd/
- "More details emerge about California immigration raid as worker dies," Los Angeles Times (July 12, 2025). https://www.latimes.com/california/story/2025-07-12/ice-agents-raid-farm-mans-death ; Associated Press, "California farmworker who fell from greenhouse roof during chaotic ICE raid dies." https://apnews.com/article/jaime-alanis-immigrant-farmworker-death-raid-c3c6f60a087f5f9f1d2b053fcef35b57
- "Federal Show of Force Prompts Real Community Response," Santa Barbara Independent (July 16, 2025). https://www.independent.com/2025/07/16/federal-show-of-force-prompts-real-community-response/
- "The aftermath of an ICE raid," Coastal View News (Carpinteria, July 2025). https://www.coastalview.com/news/the-aftermath-of-an-ice-raid/article_e3f50378-acde-4cca-9359-07a1f22a0196.html
- Ryan P. Cruz, "Survey Results Show Half of South Coast Businesses Report Immigration Impact," Santa Barbara Independent (Aug. 5, 2025) (early results, 174 respondents). https://www.independent.com/2025/08/05/survey-results-show-half-of-south-coast-businesses-report-immigration-impact/
- "Santa Barbara Reacts to Increased ICE Immigration Enforcement," KEYT News Channel 3-12 (Jan. 27, 2025). https://keyt.com/politics/2025/01/27/workers-worry-about-immigration-enforcement/
- "Local businesses feeling the effects of ICE fears in Santa Barbara," News Channel 3-12 report (Feb. 21, 2025), syndicated at https://kvia.com/news/2025/02/21/local-businesses-feeling-the-effects-of-ice-fears-in-santa-barbara/
- "Deportation Fears Keep Kids Away from Summer Lunch Program," Santa Barbara Independent (July 9, 2019). https://www.independent.com/2019/07/09/immigration-fears-keep-kids-away-from-summer-lunch-program/
- 8 C.F.R. § 274a.12(c)(11) (parolees) and (c)(14) (deferred action). https://www.ecfr.gov/current/title-8/chapter-I/subchapter-B/part-274a/subpart-B/section-274a.12
- Kimberly J. Del Greco, FBI, "Law Enforcement's Use of Facial Recognition Technology," statement before the House Committee on Oversight and Government Reform (Mar. 22, 2017). https://www.fbi.gov/news/testimony/law-enforcements-use-of-facial-recognition-technology
- INA § 316, 8 U.S.C. § 1427 (residence requirements for naturalization). https://www.law.cornell.edu/uscode/text/8/1427
- INA § 312, 8 U.S.C. § 1423 (English and civics requirements). https://www.law.cornell.edu/uscode/text/8/1423
- Laken Riley Act, Pub. L. 119-1 (Jan. 29, 2025), adding INA § 236(c)(1)(E). https://www.congress.gov/119/plaws/publ1/PLAW-119publ1.pdf
- CNN Money, "How much it costs ICE to deport an undocumented immigrant" (Apr. 13, 2017), quoting an ICE official: average of $10,854 per removal in FY2016. https://money.cnn.com/2017/04/13/news/economy/deportation-costs-undocumented-immigrant/index.html. See also WTSP/USA Today, quoting ICE spokeswoman Yasmeen Pitts O'Keefe ("all costs necessary to identify, apprehend, detain, process through immigration court, and remove an alien"). https://www.wtsp.com/article/news/politics/how-much-does-it-cost-to-deport-one-migrant-it-depends/67-434814864
- Center for American Progress, "What Would It Cost to Deport 11.3 Million Unauthorized Immigrants?" ($10,070 per person; $114 billion total). https://www.americanprogress.org/article/what-would-it-cost-to-deport-11-3-million-unauthorized-immigrants/
- ICE, Fiscal Year 2016 ICE Enforcement and Removal Operations Report. https://www.ice.gov/sites/default/files/documents/Report/2016/removal-stats-2016.pdf
- Congressional Budget Office, Effects of the Immigration Surge on the Federal Budget and the Economy (July 2024). https://www.cbo.gov/publication/60165
- Congressional Research Service, Immigration: Alternatives to Detention (ATD) Programs (R45804, July 8, 2019), pp. 12, 15, 17 (GAO ISAP II findings; FCMP evaluation and costs; detention vs. ATD costs). https://www.congress.gov/crs_external_products/R/PDF/R45804/R45804.5.pdf
- DHS Office of Inspector General, U.S. Immigration and Customs Enforcement's Award of the Family Case Management Program Contract (OIG-18-22, Nov. 30, 2017), "Program Costs and Performance Metrics." https://www.oig.dhs.gov/sites/default/files/assets/2017-12/OIG-18-22-Nov17.pdf
- Ingrid Eagly and Steven Shafer, Measuring In Absentia Removal in Immigration Court (American Immigration Council, Jan. 2021). https://www.americanimmigrationcouncil.org/report/measuring-absentia-removal-immigration-court/
- U.S. Government Accountability Office, Alternatives to Detention: ICE Needs to Better Assess Program Performance and Improve Contract Oversight (GAO-22-104529, June 22, 2022), including recommendation status updates through 2026. https://www.gao.gov/products/gao-22-104529
- G. Elliott Morris, Strength in Numbers survey, Mar. 3, 2026 (45% support "amnesty" vs. 76% support a conditional "path to citizenship"). https://www.gelliottmorris.com/p/many-americans-hold-contradictory-beliefs-2026-03-03
- Lydia Saad, "Surge in U.S. Concern About Immigration Has Abated," Gallup (July 2025; fieldwork June 2–26, 2025). https://news.gallup.com/poll/692522/surge-concern-immigration-abated.aspx
- Pew Research Center, "Mixed Views on Immigration Bill," June 7, 2007 (amnesty vs. path-to-citizenship wording). https://www.pewresearch.org/politics/2007/06/07/mixed-views-on-immigration-bill-2/
- Ronald Reagan, Remarks on Signing the Immigration Reform and Control Act of 1986, Nov. 6, 1986; Pub. L. 99-603. About 2.7 million IRCA permanent residents (general program ~1.6M + SAW ~1.1M) per commonly cited MPI/DHS statistical summaries. https://www.reaganlibrary.gov/archives/speech/remarks-signing-immigration-reform-and-control-act-1986
- U.S. Senate Roll Call Vote, 110th Cong., Vote 235, June 28, 2007 (cloture on S. 1639 rejected 46–53). https://www.senate.gov/legislative/LIS/roll_call_votes/vote1101/vote_110_1_00235.htm
- Congress.gov, S. 744, Border Security, Economic Opportunity, and Immigration Modernization Act (passed Senate 68–32, June 27, 2013; House took no vote). https://www.congress.gov/bill/113th-congress/senate-bill/744
- H.R. 4393, Dignity Act of 2025 (119th Cong.), and sponsor's section-by-section summary. https://www.congress.gov/bill/119th-congress/house-bill/4393 ; https://salazar.house.gov/sites/evo-subsites/salazar.house.gov/files/evo-media-document/dignity-act-of-2025-section-by-section_0.pdf
- Gabby Birenbaum, "Escobar looks to end immigration impasse with new Dignity Act," Texas Tribune, May 11, 2026 (H.R. 4393 structure, $7,000 restitution, about 40 cosponsors, Rep. Gill quote, business support). https://www.texastribune.org/2026/05/11/texas-dignity-act-bipartisan-immigration-reform-bill-veronica-escobar/
- Evangelical Immigration Table, "Evangelical Leaders Commend Bipartisan Dignity Act"; Evangelical Immigration Agenda (2025). https://evangelicalimmigrationtable.com/
- USCIS Policy Manual, Vol. 7, Part O, Ch. 4 (registry history and current Jan. 1, 1972 cutoff); CRS, "Immigration: Registry as Means of Obtaining Lawful Permanent Residence" (RL30578). https://www.uscis.gov/policy-manual/volume-7-part-o-chapter-4
- INA § 249, 8 U.S.C. § 1259 (registry for entry before Jan. 1, 1972). https://www.law.cornell.edu/uscode/text/8/1259
- USCCB, "U.S. Bishops Issue a Special Message on Immigration," Nov. 12, 2025 (vote 216–5–3). https://www.usccb.org/news/2025/us-bishops-issue-special-message-immigration-plenary-assembly-baltimore
- Homeland Security Act of 2002, Pub. L. 107-296, § 442, 116 Stat. 2135, 2193 (Nov. 25, 2002), codified at 6 U.S.C. § 252. https://uscode.house.gov/view.xhtml?req=(title:6%20section:252%20edition:prelim) ; enacted text: https://www.congress.gov/107/plaws/publ296/PLAW-107publ296.htm
- DHS, "Name Change of Two DHS Components," 75 Fed. Reg. (Mar. 16, 2010) (describing the renaming to Bureau of Immigration and Customs Enforcement effective Mar. 1, 2003, and to U.S. Immigration and Customs Enforcement effective Mar. 31, 2007). https://www.federalregister.gov/documents/2010/03/16/2010-5639/name-change-of-two-dhs-components
- Homeland Security Act of 2002, as amended through Pub. L. 119-4 (DHS compilation, 2025), table of contents (Sec. 471, "Abolishment of INS"). https://www.dhs.gov/sites/default/files/2025-04/25_0315_HSA-2002-updated-through-Mar2025.pdf.pdf
- DHS, "Who Joined DHS" (combination of all or part of 22 federal departments and agencies). https://www.dhs.gov/who-joined-dhs
- HSA § 872, 6 U.S.C. § 452 (reorganization authority and its limitations). https://www.law.cornell.edu/uscode/text/6/452
- United States v. Texas, 599 U.S. 670 (2023). https://www.supremecourt.gov/opinions/22pdf/22-58_i425.pdf
- INA § 212(d)(5)(A), 8 U.S.C. § 1182(d)(5)(A). https://www.law.cornell.edu/uscode/text/8/1182
- INA § 212(a)(9)(B), 8 U.S.C. § 1182(a)(9)(B). https://www.law.cornell.edu/uscode/text/8/1182
- Texas v. United States, No. 23-40653 (5th Cir. Jan. 17, 2025). https://law.justia.com/cases/federal/appellate-courts/ca5/23-40653/23-40653-2025-01-17.html. On DAPA: United States v. Texas, 579 U.S. 547 (2016) (per curiam, affirmed by an equally divided Court). https://www.supremecourt.gov/opinions/15pdf/15-674_jhlo.pdf
- Texas v. U.S. Department of Homeland Security (E.D. Tex. Nov. 7, 2024) (vacating the Keeping Families Together parole-in-place process). Summary: https://houstonimmigration.org/second-on-parole-in-place-program/
- Texas Observer, "ICE Criminal Investigators Ask to Be Distanced from Detentions, Deportations in Letter to Kirstjen Nielsen" (June 27, 2018). https://www.texasobserver.org/ice-hsi-letter-kirstjen-nielsen-criminal-civil-deportation-zero-tolerance/ ; see also Washington Post (June 28, 2018). https://www.washingtonpost.com/world/national-security/seeking-split-from-ice-agents-say-trumps-immigration-crackdown-hurts-investigations-morale/2018/06/28/7bb6995e-7ada-11e8-8df3-007495a78738_story.html
- ICE, "ICE announces historic 120% manpower increase thanks to recruitment campaign that brought in 12,000 officers and agents" (Jan. 2026) (agency-reported figures). https://www.ice.gov/news/releases/ice-announces-historic-120-manpower-increase-thanks-recruitment-campaign-brought
- 5 U.S.C. § 3503 (transfer of functions). https://www.law.cornell.edu/uscode/text/5/3503
- U.S. GAO, High-Risk Series: An Update (GAO-03-119, Jan. 2003). https://www.gao.gov/products/gao-03-119
- NPR, "Immigration Employees File Suit Against Obama's New Immigration Policy" (Aug. 23, 2012). https://www.npr.org/sections/thetwo-way/2012/08/23/159926481/immigration-employees-file-suit-against-obamas-new-immigration-policy ; Crane v. Johnson, 783 F.3d 244 (5th Cir. 2015). https://www-dev.ca5.uscourts.gov/opinions/pub/14/14-10049-CV0.pdf
- NBC News, "Biden administration may soon restart immigration program that was paused for possible fraud" (2024). https://www.nbcnews.com/investigations/biden-admin-may-restart-immigration-program-paused-for-possible-fraud-rcna168440
- The Guardian, "Facial recognition bias frustrates Black asylum applicants to US, advocates say" (Feb. 8, 2023). https://www.theguardian.com/us-news/2023/feb/08/us-immigration-cbp-one-app-facial-recognition-bias ; BBC, "At US border, tech issues plague new migrant applications" (2023). https://www.bbc.com/news/world-us-canada-64814095
- Patrick Grother, Mei Ngan, and Kayee Hanaoka, Face Recognition Vendor Test (FRVT) Part 3: Demographic Effects, NISTIR 8280 (Dec. 2019). https://nvlpubs.nist.gov/nistpubs/ir/2019/NIST.IR.8280.pdf
- Joseph Cox, "ICE Is Using a New Facial Recognition App to Identify People, Leaked Emails Show," 404 Media (June 26, 2025). https://www.404media.co/ice-is-using-a-new-facial-recognition-app-to-identify-people-leaked-emails-show/
- DHS, Privacy Impact Assessment for the Alternatives to Detention (ATD) Program, DHS/ICE/PIA-062 (Aug. 2023). https://www.dhs.gov/sites/default/files/2023-08/privacy-pia-ice062-atd-august2023.pdf
- Carpenter v. United States, 585 U.S. 296 (2018). https://www.supremecourt.gov/opinions/17pdf/16-402_h315.pdf
- Julia Gelatt, Ariel G. Ruiz Soto and James D. Bachmeier, “Changing Origins, Rising Numbers: Unauthorized Immigrants in the United States,” Migration Policy Institute fact sheet, 2025 (mid-2023 estimates from pooled 2019–23 ACS). https://www.migrationpolicy.org/sites/default/files/publications/mpi-unauthorized-immigrants-fact-sheet-2025_FINAL.pdf
- Indigenous Farmworker Study (with California Rural Legal Assistance), “California’s Indigenous Farmworkers,” final report, January 2010, and “Demographics.” http://www.indigenousfarmworkers.org/IFS%20Full%20Report%20_Jan2010.pdf ; http://indigenousfarmworkers.org/demographics.shtml
- Migration Policy Institute, “Settling In: A Profile of the Unauthorized Immigrant Population in the United States,” 2019, Table 3 (pooled 2012–16 ACS). https://www.migrationpolicy.org/sites/default/files/publications/UnauthorizedData-FactSheet_FinalWeb.pdf
- Mixteco/Indigena Community Organizing Project (MICOP), “Who Are We?” https://mixteco.org/ ; and MICOP, “Farmworkers, Census, and Indigenous Knowledge” (presentation for the California Census Office). https://census.ca.gov/wp-content/uploads/sites/4/2020/06/MICOP-Peer-Learning-Slides.pdf
- First 5 Ventura County, staff recommendation to contract with MICOP, April 16, 2026. https://first5ventura.org/wp-content/uploads/2026/04/9.-Rec_MICOP_4-16-26_Final-2.pdf
- Instituto Nacional de Estadística de Guatemala, XII Censo Nacional de Población 2018, principal results. https://www.ces.uvg.edu.gt/censo2018/documentos/Principales_resultados_Censo2018.pdf
Additional sources in the white paper
- Matter of Yajure Hurtado, 29 I&N Dec. 216 (BIA 2025). https://www.justice.gov/eoir/media/1413311/dl