So there is no 90 day limit in the Constitution.========Where does the Constitution specify that not voting is consent in absentia for SC nominations?========Fact 6 Obamas nominees must pass a vetting process by the Senate before being confirmed.
Just like every Justice in the past
That is partially true.
The Constitution does NOT specify that the Senate VOTES ... only that they CONSENT.
This consent has, in the past, been determined by voting === but it could be argued that if they don't even vote THAT is consent.
If Obama nominates and 90 days later they have not even voted then it is consent in absentia.
Voting is the only way they can decline his nominee. So if they don't vote then they consent.
There are only two options. They must either Consent or Deny. If they refuse to do either then they have abdicated their responsibility under the Constitution and it can be considered Consent because they did not deny.
If they refuse to do their job and take votes they should face impeachment charges to for dereliction of duty.