The Constitution contains many checks and balances, and more or less compels the necessity for the negotiated settlement of differences. It is not a winner takes all system. It is a system which by design makes it hard for aspiring tyrants to make much progress unobstructed by their opponents, which is the principle reason why aspiring tyrants–the Left produces nothing else–see it as passe. The dislike it for precisely the traits which make it invaluable.
The President nominates Supreme Court Justices. The Senate confirms them. Nothing is preventing Obama from nominating whomever he likes, and nothing is preventing Republicans from using their control of the Senate to block his nominations until after the next President is inaugurated. There is no timetable given in the Constitution of which I am aware. The only impediment to being completely obstructionist is the likelihood that at some point the same tricks will be played on those serving as obstacles. Given how blatantly Obama has abused the law, one wonders what anyone can say when a conservative does the same things. They certainly cannot say there is no precedent. Obama governs as if there will be no after, as if Democrats will rule forever, and the hens never come home to roost. Given how patently imbecilic much of this nation is, he may be right. But of course, it is quite possible he is wrong, too. Trump appears to me the favorite in both the Primary and General Elections. Too many people are too pissed off about too many things.
This is the rough and tumble of political systems which attempt to reconcile differing agendas and positions peacefully. The alternative is violence in the streets, or the use and abuse of the police and military to suppress dissent, both of which of course have been common throughout history.