Tax experts say proposed U.S. immigration enforcement measures could substantially reduce tax revenue over the next decade by discouraging undocumented people from filing returns. Both reports cite estimates that lost tax receipts could reach roughly $479 billion (or nearly $500 billion) between 2025 and 2034. The main mechanism described is risk created by proposed or expanded IRS information sharing with immigration authorities and ICE, which would make undocumented workers more likely to avoid submitting tax forms because they fear their data could be used for enforcement. The Guardian also notes that additional policy changes affecting immigrant families may reduce incentives to file, including the removal of certain tax benefits for immigrant parents. The Independent similarly focuses on the concern that cooperation between tax collection systems and immigration enforcement would deter filings. While the articles frame the impact in terms of enforcement and data-sharing proposals, they rely on tax professionals’ assessments rather than reporting specific completed policy outcomes or audited revenue losses. The overall picture presented is that changes increase filing risk, leading to fewer tax filings and lower revenue projections.