"Immigrants without legal status pay billions of dollars in taxes, many through a nine-digit code known as an Individual Taxpayer Identification Number. For years, immigrant advocates and tax experts say, the IRS has consistently assured undocumented taxpayers that their information is confidential, and that it would be safe for them to file tax returns."
Goodbye to all that revenue.
https://www.npr.org/2025/04/08/g-s1-59056/irs-dhs-information-sharing-deal-immigrants-tax-records