Supreme Court will say this is a political question and a separation of powers issue and they have absolutely no constitutional authority to get involved.
Constitutionally correct. But Roberts might say it is a tax!
Certainly Justices Kavanaugh, Thomas, and Gorsuch have witnessed the weaponization of legal distortions for political purposes and might be willing to address this issue.
Supreme Court will say this is a political question and a separation of powers issue and they have absolutely no constitutional authority to get involved."
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Either Trump sends his argument to SCOTUS, or the Senate sends a complaint there stating the House is obstructing their Constitutional mandate.
SCOTUS does as you suggest, says this is political and refuses to get involved.
And since there is no law, nor Constitutional requirement that the House has to physically send a paper copy of any articles of impeachment over to the Senate side, the Senate should take up the articles of impeachment that are currently publicly available on the House web site and do whatever it is they are going to do (hold a trial with witnesses, or majority leader McConnel dismissing them as fraudulent, etc)
The House takes their case to SCOTUS arguing the Senate can't do that without them "sending" the articles over.
SCOTUS is then going to do what? Go against what they just opined...say it's now not political and takes up the House's argument?
As long as this coup is happening, let's go to war...get all the dirty political laundry out in the open for all to see.