When the Democrats take over the House in January, Rep. Elijah Cummings (D-Md) will likely take over the chairmanship of the House Oversight Committee.
Cummings already has a list of 64 subpoenas he's likely to issue to the Trump Administration.
Cummings, 67, leans on a walker after a knee infection, but neither threats nor injury are likely to keep him from investigating the things he says the President has done to "violate the mandates of the founding fathers."
"We have a duty under the Constitution of the United States, and we are sworn to act as a check on the Executive Branch. And that's all we're doing. If someone wants to tell me don't do my job, which the Constitution says I must do, than I've been violating my oath to myself," he said.
Cummings said Democrats will decide within weeks where they'll start. But he's been passionate on child separations at the border.
He has also pushed to investigate foreign payments to the Trump Hotel, security clearances for members of the Trump family, and Russian meddling.
"We will look at how the Russians or anyone else are interfering in our democracy."