AT&T and T-Mobile USA filed a response in U.S. District Court to the Department of Justice's lawsuit that seeks to block their proposed merger. In a 27-page filing, the carriers argue that the DOJ failed to appreciate how the efficiencies of the acquisition would lead to a healthier market for advanced wireless services, that the DOJ failed to understand the competitive dynamics currently at play in this industry, and that the DOJ failed to appreciate how the spectrum shortage they now face will lead to higher prices should their merger not...