The U.S. Justice Department sued to block AT&T Inc.’s proposed $39 billion takeover of T-Mobile USA Inc., saying the deal would “substantially lessen competition” in the wireless market.

The government is seeking a declaration that AT&T’s takeover of T-Mobile, a unit of Deutsche Telekom AG (DTE), would violate U.S. antitrust law, according to a complaint filed today in federal court in Washington. The U.S. also asked for a court order blocking implementation of the deal, the largest announced acquisition of the year, according to data compiled by Bloomberg.

“I don’t see any room to settle the case,” said Bert Foer, head of the American Antitrust Institute in Washington, in an interview. “They have clearly drawn a line in the sand.”

Continue reading on www.bloomberg.com