The constitution is primarily a contract among the union of states - the Bill of Rights was tacked on as an afterthought. States should have the utmost standing of any party at all and there is no graver concern than for a state than to see its representation disenfranchised by a conspiracy of other states, conducting fraudulent elections to steal then and seat their favored political party. A state (and hence the citizens of said state) should have the very highest standing of all in such matters - Texas, and all those states that backed its filing.

SCOTUS just made it clear to them that when they are disenfranchised by a conspiracy of other states, there is no avenue of redress of grievances. That is abject tyranny of the highest order.

This post summed it up best I think. As it turns out, anyone that wasn't a rat would never have gotten McConnell's approval to begin with.