I did.
There are no enforcement mechanisms. Each branch of government can ignore the dictums of the others. Until Trump there has been a tacit but implicit acknowledgement to respect the other branches of government and their singular purviews. The executive branch understood only the legislative branch made law or appropriated monies, and the legislative branch understood the executive branch executed the laws they made. Under Trump this is no longer the case. Before I could type this comment, Trump has already declared a national emergency on the border, which in effect expanded executive authority and subsumed some legislative prerogatives. As he learns of his immense power within his presidential duties, he will no doubt continue to expand his executive authority and the auxiliary legislative powers imbued by and with the imprimatur of the SC.
What is important about this is the fact the SC has no judicial mechanism to enforce any ruling or opinion they may publish. If Trump doesn't like their opinion, he can ignore it. Judicial harsh language will become just wasted printed type. If Congress says Trump can't make law, he will declare another and in this case unspecified national emergency which would encompass increased legislative duties. What can Congress do? Write a law which can and would be ignored by Trump.
What all of this means is Trump has become in effect a king. I warned of this possibility long ago and now it appears to be a reality.