Actually if Clapper is telling the truth that he did NOT know about the FISA warrant, and if as so many press outlets are reporting there really was a FISA warrant, that is damning to the Obama administration.
It is the DOJ that applies for a FISA warrant and then the FBI carries it out.
If they did all that and never told the DNI, then that would be unusual and tend to prove that it WAS political and not a bona fide national security operation.
I tend to agree...Director Clapper also knows he's going to get called to testify in front of Congress and may be signalling his unwillingness to continue playing this game of charades for Obama and his cronies.