An interesting point. But let's get the context straight.
Trump is accused of obstruction during the course of carrying out his duties as president, which is to say the chief law enforcement officer of the United States.
Bill Clinton was accused of obstruction for lying under oath during a trial in which he was accused by Paula Jones of sexual harassment.
This story is fake news. In fact,...
Article I section 6 of the constitution also exempts Representatives and Senators from arrest... Here,
The Senators and Representatives shall receive a Compensation for their Services, to be ascertained by Law, and paid out of the Treasury of the United States. They shall in all Cases, except Treason, Felony and Breach of the Peace, be privileged from Arrest during their Attendance at the Session of their respective Houses, and in going to and returning from the same; and for any Speech or Debate in either House, they shall not be questioned in any other Place.
The President has not such protection ,but the President is the chief law enforcement officer in the land. So, how do you prove obstruction when he is staying within the parameters of his job? How do you prove obstruction when, exercising his authority as chief law enforcement officer, the president elects to fire a special prosecutor, appointed by the Deputy Attorney General of The Department of Justice who works for Trump, if he simply "deems" said prosecutor to be exceeding the bounds of his or her investigation, (which is what Bush SHOULD have done in the Plame investigation considering that the special prosecutor in that case had solved the case in the first three weeks of the investigation.)
You could impeach Trump for it. Impeachment works that way. If you could get the votes in the House, then you have get the votes in the Senate to remove Trump. Then you get Pence. . . .
So, now the ugly part. Say you do get rid of Trump AND Pence, AND Ryan, and get some Democrat in the Oval Office. Well... Gawd I hate going here, but first blood has already been drawn. In Alexandria VA. Now you have several million conservative gun owners to deal with. And, not many of them are liberals. That is the path of civil war. Do we really want to go there? Really? Seriously? Just because you don't like the Presidents HAIR?!?!?!?