Adam Schiff actually said...

"If the Congress cannot, because the president prevents it, investigate the President's own wrongdoing, there will never be in Article 1 because there will be no more impeachment power."

"If there is no Article II, let me tell you something, there will never be an Article 1."

"You can be impeached for obstructing justice but you cannot be impeached for obstructing Congress."

"If you can't have the ability to enforce an impeachment power, you might as well not put it in the Constitution."