Jerrold Nadler actually said...

In the history of the Republic, no President other than this one has ever claimed and exercised the unilateral right and power to thwart and...

The President's aggressive and unprecedented resistance to congressional subpoenas for witnesses and documents is blatantly and dangerously ...

We cannot and we will not allow the impeachment power itself to be destroyed.

If this behavior persists, the balanced, carefully balanced sharing of power between the three branches of government is gone forever.