1. Anyone who thinks a Republican-controlled Senate is ever going to block an Obama nominee to the U.S. Supreme Court has lost his mind.
2. Unlike the process for typical bills and confirmations of executive appointees (i.e., there is no provision in the Constitution for a Senate filibuster ... it is simply a procedural item that can be changed at any time), the Senate majority leader doesn't have the authority to change the rules for treaty ratification. Treaties must be ratified by two thirds of the Senate under Article II, Section 2 of the Constitution.
When Ruth Bader Ginsburg was nominated in 1993, she was the least qualified and the most radical nominee in history, with the possible exception of Thurgood Marshall.
Three Republicans voted against her.