The U.S. Department of Justice filed a federal lawsuit Thursday, claiming that the Texas law denies equal access to racial or ethnic minorities.
Texas and several other states, mainly in the South, had been bound by the Voting Rights Act of 1965 to get approval from the federal government before it changed its voting laws. A ruling from the U.S. Supreme Court in June struck down the preclearance provision of the act.
Since then, Texas has toughened its voting laws and now requires voter to show a government issued photo ID before voting. Texas, and 19 other states that have voter ID requirements, say the laws stop potential voter fraud.