It's not a question of "if" they can.
It's a question of who in the hell is going to inforce any decision???
That's where we are at.
The WILL of those to do their jobs & enforce laws.
When corruption starts at the top?
Who is willing to arrest a president?

https://www.msnbc.com/deadline-white-house/deadline-legal-blog/supreme-court-trump-immunity-ruling-ask-jordan-rcna200839