see url: https://en.wikipedia.org/wiki/Antonin_Scalia
and url: https://en.wikipedia.org/wiki/Appointment_and_confirmation_to_the_Supreme_Court_of_the_United_States
POTUS wants a new supreme court judge before the election...he gets to nominate them. The Republican Senate want a new one appointed after the election. Obviously, they are hoping to win the Presidency...so they can trump Obama...:-) . (did you notice the pun...). A Supreme Court Judge is independent of the executive, administration and Congress of course...he/she just gets appointed wth the approval of the Senate Judicial Review Committee, which is staunchly Republican and Conservative. There will be lots of discussions going on behind closed doors, I should think, as to who is the most suitable and appointable candidate. Is there such a thing as an honest and independent judge...one ponders...