At least seven states including New York, California, Illinois, Pennsylvania, Washington and Ohio have announced they are joining the Justice Department lawsuit to stop AT&T’s attempted buyout of T-Mobile USA.

The merger has been heavily criticized by consumer groups for its potential to reduce wireless competition and stifle the marketplace with just two dominant carriers — AT&T and Verizon Mobile.  Now several Attorneys General have joined the voices of opposition to the merger.

“This proposed merger would stifle competition in markets that are crucial to New York’s consumers and businesses, while reducing access to low-cost options and the newest broadband-based technologies,” New York Attorney General Eric T. Schneiderman said in a statement.

Washington State Attorney General Rob McKenna said the deal would “result in less competition, fewer choices and higher prices for Washington state consumers.”

“The proposed merger would create highly concentrated markets in Massachusetts and could lead to higher prices and poorer service.” Massachusetts Attorney General Martha Coakley said.

Illinois Attorney General Lisa Madigan said the deal would “substantially lessen competition for mobile wireless telecommunications services in Illinois and across the United States.”

“Blocking this acquisition protects consumers and businesses against fewer choices, higher prices, less innovation, and lower quality service,” Madigan added.

“Our review of the proposed merger between AT&T and T-Mobile has led me to conclude that it would hinder competition and reduce consumer choice,” California Attorney General Kamala D. Harris said. “Enforcement of antitrust law is the responsibility of the Attorney General and is vital to protecting our state’s economic strength and tradition of innovation for the betterment of all Californians.”

Shuler

Although the level of opposition to the transaction continues to grow, AT&T itself claims to remain confident it can push the merger through.

“It is not unusual for state attorneys general to participate in DOJ merger review proceedings or court filings,” AT&T representative Michael Balmoris said.

Several Democratic lawmakers, most of whom receive substantial campaign contributions from AT&T, would seem to underline the company has the support of at least some in Congress.

Rep. Heath Shuler (D-North Carolina), joined 14 Democratic co-signers in a letter sent Thursday to President Barack Obama encouraging him to support the merger deal.

“By settling the proposed merger of AT&T and T-Mobile USA we can put thousands of Americans back to work and promote economic development across the country,” Shuler said. “I urge the President to strongly consider the vast benefits this merger will have on job creation and the economy and quickly resolve any concerns the Administration may have with the proposal.”

Among the co-signers: Rep. John Barrow, Rep. Mike Ross, Rep. Dan Boren, Rep. Dennis Cardoza, Rep. Joe Baca, Rep. Leonard Boswell, Rep. Ben Chandler, Rep. Jim Costa, Rep. Henry Cuellar, Rep. Mike McIntyre, Rep. Mike Michaud, Rep. Collin Peterson, Rep. Loretta Sanchez, and Rep. David Scott.