In an April 11 speech to Al Sharpton’s National Action Network, President Obama recited statistics purporting to show that voter fraud was extremely rare. The “real voter fraud,” he said, “is people who try to deny our rights by making bogus arguments about voter fraud.”

These arguments themselves are bogus. Consider the two studies from which Mr. Obama drew his statistics. The first, which he said “found only 10 cases of alleged in-person voter impersonation in 12 years,” is a 2012 report issued by News21, an Arizona State University project.

Read more of Robert D. Popper’s Wall Street Journal column.