[...]Take AT&T, for example. The telecommunications giant is pushing for the supercommittee to increase wireless spectrum, reform corporate tax and minimize government regulation. The company, which is also in the midst of fighting for its merger with T-Mobile, bundled $71,000 for the Democratic Senatorial Campaign Committee through the first six months of this year and $20,750 last year for Washington Sen. Patty Murray, who co-chairs the supercommittee and runs the campaign arm that is charged with maintaining a Senate majority next November. In fact, Murray received the most bundled contributions of any individual supercommittee lawmaker since last year, also taking...