Voter ID laws are now active in 33 of the 50 U.S. states, covering about 60 percent of the population. Since President Barack Obama was elected in 2008, 11 states have enacted identification requirements for voting. The rules in those states range from strictly asking for photo IDs such as a driver’s license to simpler documents such as a paycheck.

Proponents say the laws prevent voter fraud and give the public more confidence in the process.

“Voter ID can prevent and deter impersonation fraud, voting under fictitious voter registrations, double voting by individuals registered in more than one state, and voting by illegal aliens,” Don Palmer, a former election official in Virginia and Florida, wrote in a Heritage Foundation report.

Palmer argued that those who oppose the laws exaggerate the number of people who are affected, and that those assertions inhibit the national debate.

Read more at Voice of America.