[philman_36]

It's about which court is the proper venue to try the matter for jurisdictional purposes. Look up forum non conveniens to understand the issue.

You're speaking of a Sua Sponte Action?
forum non conveniens
Sua Sponte Action
Further, a court will typically only invoke forum non conveniens sua sponte if it meets a 2-step test:
the court is a seriously inappropriate forum
there is a substantially more appropriate court that is available for the plaintiff's claim

What Court would be more appropriate than the Supreme Court?

[philman_36]

Personally, IMO, this is why it belongs with the Supreme Court.

Subject matter jurisdiction
The power of a court to adjudicate a particular type of matter and provide the remedy demanded.

[Dr. Franklin]

You're speaking of a Sua Sponte Action? forum non conveniens Sua Sponte Action Further, a court will typically only invoke forum non conveniens sua sponte if it meets a 2-step test: the court is a seriously inappropriate forum there is a substantially more appropriate court that is available for the plaintiff's claim

This isn't a typical case. The proper venue for the action is in D.C.

What Court would be more appropriate than the Supreme Court?

Unless SCOTUS is willing to recognize that this case falls under its original jurisdiction, (again I note the POTUS must be a "consul" under the original meaning of the word), then we are left with the case falling under the appellate jurisdiction of SCOTUS. In that case, SCOTUS can not adjudicate any more than what is first done in a U.S. District Court, although it can retain jurisdiction for prompt review of the lower court.