BP Plc (BP/), which agreed to plead guilty to criminal charges after the worst oil spill in U.S. history, will be suspended from winning new contracts from the federal government, the U.S. Environmental Protection Agency said today.The EPA said it imposed the ban because the company's conduct during the 2010 Deepwater Horizon disaster showed a "lack of business integrity." The action doesn't affect existing contracts, and BP said it already was working to get the ban lifted. The incident killed...