U.S. Elections Are Vulnerable to Noncitizen Voting Fraud
Mass immigration has had a significant effect on American electoral politics. Despite the fact that it is a crime for aliens to vote in federal elections, noncitizens and illegal aliens are counted when apportioning congressional districts.[i] This means that areas with large numbers of illegal alien residents gain additional representatives in Congress. This also translates into more electors under the Electoral College for such states, which means that noncitizens also exert an indirect influence on presidential elections.
https://www.fairus.org/issue/societal-impact/noncitizens-voting-violations-and-us-elections