Reich: Dump the dictator and Congressional power

In this article he notes that Dump and staff are refusing Congressional subpoenas. The latter are a Constitutional right to check the Executive Branch, so Dump is pulling a dictator move. Reich suggests that one way to fight it is to issue contempt charges, then have the House sergeant-at-arms arrest the perpetrators and conduct a Congressional trial.

Which of course would case an expedited Supreme Corp decision, and who knows how that would go? We can only hope that Chief Injustice Roberts, to preserve the integrity and legacy of the Corp, would vote to validate and enforce the subpoenas. But suppose Dump still refused to obey? The Justice Department would be responsible for enforcing it, and if they refuse?