In a 2012 Harvard/YouGov survey, 14% of self-declared non-citizens stated they were registered to vote, and 9% stated they "definitely voted" in the 2012 U.S. presidential election. In addition, database matches with consumer and voting records showed that 22% of non-citizens in the database were registered to vote, and 12% voted in the 2012 U.S. presidential election. The margin of sampling error for these results is plus-or-minus 4 percentage points with at least 95% confidence. Other surveys conducted in 2008, 2010, and 2013 found similar voter registration and voting levels among non-citizens. U.S. law generally forbids non-citizens from registering to vote or voting in federal elections. Various attempts to dismiss these facts by so-called "fact checkers" are debunked at the second link below.