Goldman Sachs has a lot of friends in high places, including many former Goldman execs. But the company has also made a few enemies along the way to becoming arguably the most powerful firm on Wall Street, including the Chairman and Ranking Republican on the Senate Permanent Subcommittee on Investigations. "In my judgment, Goldman clearly misled their clients and they misled the Congress," Sen. Carl Levin (D-MI) said yesterday as he and Sen. Tom Coburn (R-OK.) released a two-year study on the financial crisis and its cause. Generally speaking, Sen. Levin has accused Goldman of selling clients mortgage-backed securities (MBS)...