Trump seems determined to challenge the constitution ignoring the numerous subpoenas issued by Congress. He has instructed former White House lawyer Don McGahn not to respond to Congress and wants to challenge Congress in the Federal Courts. His political and legal strategy seems to be to get the courts to decide, bypassing Congress. The problem Congress is facing right now is that the public fight concerning the legal terrain is something Trump wants. Since the Mueller Report was released Trump thinks he is in total control, doesn’t need to respond to Congress, and will assert Executive Privilege whenever he wants. He has expressed a lack of concern about Impeachment because Republicans still have control of the Senate, and Mitch McConnell will stop the process of impeachment in the U.S. Senate.
Pundits are expressing the view that Trump relishes the confrontation with Congress knowing time is on his side. As far as obstruction, he has never acted in a way that he is personally exposed, but rather ordering his aides to act in ways outside the law, like firing the Special Counsel. One of the main witnesses against Trump at this point is Don McGahn because he has stated in public that he refused to obey Trump’s orders to fire Mueller and decided to resign his post. Congress can continue to discuss impeachment, but Nancy Pelosi has the right approach knowing that impeachment is a long process that will distract her party from dealing with more urgent issues. It will provide Trump with grounds to attack Congress for doing nothing except harassing him. Right now the challenge for Congress is to deal with a president that wants to ignore the constitution by ignoring the will of our representatives. If he can do that we are on the way to a dictatorship.