Maryland Rep. Elijah Cummings on Thursday called for an investigation into House Intelligence Committee Chair Devin Nunes, who on Wednesday personally briefed President Donald Trump and announced publicly that a source showed him evidence that the Obama administration had inadvertently collected surveillance on members of the Trump transition team. “What he has done is he’s scuttled, and put a cloud over, his own investigation, and he has become the subject —basically, he should be — of an investigation,” Cummings said on CNN Thursday morning.