Only US citizens are eligible to vote in federal elections. Non-citizens who vote in federal elections face potential criminal and immigration charges and can be deported from the United States.
The Federal Department of Homeland Security has updated its SAVE program so State and Local authorities can input social security numbers to verify US citizenship to prevent non-citizens from voting in federal elections.
https://www.dhs.gov/news/2025/04/22/dhs-uscis-doge-overhaul-systematic-alien-verification-entitlements-database
DHS and the Social Security Administration have partnered to improve the existing Systematic Alien Verification for Entitlements (SAVE) program to ensure eligibility for those applying for public benefits. The SAVE program was established in 1987 to meet the requirements of the Immigration Reform and Control Act (IRCA) of 1986.
Effective April 1, 2025, USCIS eliminated all charges for state, local, tribal, and territorial government agencies to use the service. States interested in participating in the SAVE program can learn more and register.