A congressional committee released a stunning report on the use of chemical dispersant in the Gulf, reporting the coast guard approved 74 exemptions allowing BP to use the chemicals during a seven week span. This was after the EPA said the chemicals had to be used sparingly. BP admits pouring 1.8 million gallons of dispersant into the ocean, a number that's being disputed by Congressman Ed Markey of Massachusetts. He spoke to CNN's Kiran Chetry Monday.