A United States Senate subcommittee on Friday announced that it will hold a hearing next month to review AT&T’s proposed acquisition of T-Mobile USA. The $39 billion deal, which has been strongly and publicly opposed by Sprint, would see AT&T once again become the nation’s top carrier by subscriber count. It would also give AT&T control of T-Mobile’s AWS spectrum for use with the carrier’s upcoming LTE network rollout. A Senate Judiciary antitrust subcommittee headed by Wisconsin Democrat Herb Kohl will convene on May 11th to review the proposed merger in a hearing.