U.S. senators ask government for proof Obama wiretapped Trump

By Richard CowanWASHINGTON (Reuters) - Two senior senators asked the FBI and Justice Department on Wednesday for any information they have on President Donald Trump's unsubstantiated claim that his predecessor Barack Obama wiretapped him during the 2016 U.S. presidential campaign.In a letter to James Comey, director of the Federal Bureau of Investigation, and Acting Deputy Attorney General Dana Boente, Republican Lindsey Graham and Democrat Sheldon Whitehouse wrote:"We request that the Departmen