It is not possible for a president to obstruct justice. A president IS justice.
Ehhh, no. Aside from Constitutional indelicacies, there is also the concept that *all* are subject to "the Law" -- a concept borrowed by U.S. Founding Fathers from the signing of the Magna Carta. Here -- so you don't have to look it up:
https://en.wikipedia.org/wiki/Magna_Carta
Put that idea with a little Locke
https://www.shmoop.com/ideological-origins-of-american-revolution/john-locke.html
and you really got something on which to base a government. Call it a "What Makes Us Up" or a "Here's our constituent parts." or..... a Constitution.

