McConnell was not rejecting the nominee, he was rejecting the right of the current president to appoint a supreme court justice. Not only that but many of his supporters denied the right of any non republican president to appoint a supreme court justice when they said they will refuse all nominees from Clinton as well if she well if she won.
McConnell should be removed from office and if Schumer meant that he would block all Trump nominees without consideration to who it was (which it sounds like he may have) then so should he, and any other senator from either side who agrees with such, for breaking their oath of office.
Indeed Republicans did set a very dangerous precedent when they refused to hold hearings on Obama's Court nominee. The hearings should have gone on despite the difference of opinion. What goes around comes around; in the future if the Republicans find themselves in the same position, they will remember this day with utter regret.
Yes, Republicans created a dangerous precedent when they refused to hold hearings on Obama's Supreme Court nominee following the death of justice Antonin Scalia. The U.S. Constitution says that is the right and duty of a sitting president to appoint the Supreme Court nominee of his choice when there is a vacancy.
The Republican senate did not create a dangerous precedent by refusing to hold hearings for President Obama's most recent supreme court nominee. The senate has the constitutional right to advise and consent each supreme court nominee. In effect, the senate advised that it did not approve the president's nominee by refusing to hold hearings.
No, I do not believe a dangerous precedent has been set with Republican refusal to allow the outgoing president the opportunity to appoint a new Supreme Court judge. The Democrats would have done the exact same thing and everyone can pretty much agree on that. It's just politics as usual.