Senator Al Franken has sent a letter to federal regulators recommending that they reject the proposed merger of AT&T and T-Mobile. In the 24-page document, the Minnesota Democratic expressed concerns that the deal would competitively squeeze Sprint and other smaller players,ultimately resulting in a Verizon and AT&T duopoly. The Senator also fears the $39 billion acquisition of T-Mobile by AT&T would drive up wireless prices and cost thousands of jobs.