The House version of the SAVE America Act, which passed last month, has two main planks. First, people registering to vote would be asked to show proof of U.S. citizenship, such as a passport, birth certificate or naturalization document. Many driver’s licenses wouldn’t qualify. While the bill says it would accept a REAL ID “that indicates the applicant is a citizen,” standard license designs often don’t say. Legal immigrants can get REAL IDs, too.