In other voting news, the U.S House of Representatives backed a bill on Wednesday to require voters show a photo ID–such as a passport — that proves their citizenship in order to vote in federal elections. Republican backers of the measure said the move is needed to prevent voting fraud. But civil rights advocates said the measure is a modern-day poll tax that could disenfranchise millions of voters. The NAACP Legal Defense Fund has warned that the bill would disproportionately affect African-Americans, Latinos, Native Americans, the elderly, disabled and the poor.