This bill would restrict mortgage eligibility to U.S. citizens only by amending federal housing laws that currently allow non-citizens to obtain mortgages. Specifically, it would require borrowers to be U.S. citizens to qualify for Federal Housing Administration insurance on mortgages, and it would prevent Fannie Mae and Freddie Mac—the government-sponsored enterprises that buy and bundle mortgages into securities—from purchasing conventional mortgages on single-family to four-family homes if the borrower is not a U.S. citizen. The bill would affect non-citizen homebuyers, including permanent residents and visa holders, who would no longer be able to access these major mortgage pathways. The legislation contains no specified funding or implementation timeline beyond the effective date of enactment.