She demands that Speaker Ryan remove Devin Nunes from the chairmanship of the House Intelligence Committee, because he's performing the oversight the Constitution calls on him to do
Pelosi: We can't hold the FBI accountable to the public because the FBI objects
Let's start by reviewing some constitutional roles here:
One example of separation of powers is that Congress, which answers to the people, has oversight authority over the executive branch. There are specific committees that take on this role over specific executive agencies, and one example of this is that the House Intelligence Committee exercises oversight authority over the Justice Department and the FBI, which is part of the DOJ.