A spate of new Republican-backed anti-fraud voting laws will face tough federal scrutiny because opponents say they are discriminatory. Civil rights watchdogs say requiring voters to present state-issued I.D. will disproportionately affect urban, elderly, young and poor voters who don't drive and are more likely to vote Democratic. Attorney General Eric Holder vowed Tuesday to review those state laws for potential civil rights violations, saying that preserving voting access for all Americans is not only a legal but also a "moral imperative," The New York Times reported. More than a dozen states have already passed the onerous new requirements. Under the Voting Rights Act the Justice Department can seek to block the measures.