The US Department of Justice’s approval of a Georgia law requiring voters to prove citizenship before they are allowed to cast a ballot has shocked some observers. “Those who see a contradiction between upholding a requirement for voters to prove citizenship while neglecting to do the same for a candidate are mistaken,” Attorney General Eric Holder contended. “Ensuring that a person who votes is, in fact, entitled to vote is the job of government election officials. On the other hand, whether a candidate is entitled to hold the office for which he is running is the job of voters. Voters...