When the Obama administration temporarily banned BP (NYSE:BP) from federal contracts Wednesday it pointed to BP's "lack of business integrity" and conduct relating to the 2010 Deepwater Horizon explosion and spill. The sanction however has been years in the making.   BP has been criminally convicted in four previous cases — including a 2005 explosion in Texas that killed 15 workers — and the EPA has been considering broader debarment proceedings against the company since at least 2005. The agency had actually been nearing a decision on a contract ban in January 2010 just a few months before the ...