A really bad idea: RealID required to Vote:

Greg Anrig, Jr. reports a suggestion by James Baker that people be required to show a RealID card in order to vote. Fortunately the courts have long protected the right to vote against unreasonable voting requirements, so this recommendation is unlikely to succeed. Let us hope. The same article quotes Sam Daschle's fine dissent.

In the first half of the 20th century, the vote was often denied to blacks by requiring them (but not whites) to pass various sorts of tests. My father, a civil rights lawyer, examined many of the actual "test results" as he fought these tests. In one case, a black was refused the right to vote due to "errors in spilling."