The United States now runs three demographic and fiscal clocks simultaneously: an aging population entering retirement at the fastest rate in the nation's history; a working-age population that has depended almost entirely on immigration for growth since 2019; and a federal debt service bill that is the fastest-growing line item in the budget and projected to more than double by 2036.

Current administration policies have contracted the second lever while enlarging the third — a combination that nonpartisan fiscal forecasters, including the Social Security Administration's own actuaries, project will accelerate the depletion of the Social Security and Medicare trust funds. This report documents what the underlying data shows, using primary sources from the Congressional Budget Office, the Social Security trustees, the Federal Reserve research banks, Penn Wharton, the Peterson Institute, the Committee for a Responsible Federal Budget, and ideologically varied policy research institutions.