The Senate is on the business end of the game, you are not. It has always been this way until recently. The Supreme Court deals with matters of elections and civil liberties. This deals with neither. That is the way that things have always been, until now.
Thats just not true. Fritz v. Ernest established the precedent that allowed the Supreme Court to strike federal laws (in that case the abolition of the death penalty) that were unconstitutional. This power that you think the Court has just acquired has been with them for months.