States Blocking T-Mobile's Deal Would Disrupt U.S. Merger Policy, DOJ Says

State officials will “wreak havoc” on U.S. merger enforcement if they diverge from federal regulators and block deals on their own as they’re trying to do with T-Mobile US Inc.’s proposed takeover of Sprint Corp., the Justice Department’s top antitrust official said.

Makan Delrahim, the head of the department’s antitrust division, on Wednesday took a swipe at the state lawsuit trying to stop the merger of the wireless carriers, which was approved by the Justice Department and the Federal Communications Commission last year.