They have absolutely no say in the matter. None at all. The IC neither investigates nor, aside from their own people, adjudicates clearances. And the President, as the ultimate national authority on national security, is the final adjudicator of clearances.
I don't support the wilder of DR's conspiracies (I indulge him...which is not the same thing), but this honestly looks more like the disinformation he mentioned yesterday that was coming.