Lawmakers and others were celebrating the override of Gov. John Lynch’s veto of the photo identification bill, but the celebration may have come a little too early. The pending law must be reviewed by the U.S. Department of Justice because any significant changes in state election laws — and requiring photo identification is a significant change — have to be reviewed. New Hampshire — the only Northern state affected — and 15 other states are subject to Section 5 of the Voting Rights Act of 1965, which seeks to eliminate discriminatory voting practices that bar or hinder voting by minorities. New Hampshire was snagged in the 1968 presidential election when 10 towns were identified with less than 50 percent of adults voting in the a presidential election, a violation of the act.