On Capitol Hill Wednesday, top Republicans rejected President Trump’s unsubstantiated claims that President Obama ordered the wiretapping of Trump’s phones during the 2016 presidential campaign. House Intelligence Committee Chair Devin Nunes said he does not think Obama tapped Trump’s phones. Attorney General Jeff Sessions said he has not provided any evidence to Trump that would substantiate the president’s claims. Senate Judiciary Chair Charles Grassley and South Carolina Senator Lindsey Graham both threatened to block Trump’s nomination of Rod Rosenstein for deputy attorney general unless the FBI answers lawmakers’ questions about the wiretap claims.