The U.S. Supreme Court heard arguments Monday on the federal government’s challenge of an Arizona law that requires proof of citizenship before allowing someone to register to vote. But most voters think everyone should have to prove their citizenship before being allowed to sign up for voting and don’t believe such a requirement is discriminatory.

The latest Rasmussen Reports national telephone survey finds that 71% of Likely U.S. Voters believe everyone should be required to prove his or her U.S. citizenship before being allowed to register to vote. Twenty-one percent (21%) disagree and oppose such a requirement. (To see survey question wording, click here.)

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The survey of 1,000 Likely Voters was conducted on March 18-19, 2013 by Rasmussen Reports. The margin of sampling error is +/- 3 percentage points with a 95% level of confidence. Field work for all Rasmussen Reports surveys is conducted by Pulse Opinion Research, LLC. See methodology.