Oh wait, everyone in the Senate hates him. That's why.
The purpose of that fig leaf was to deflect from the fact that BOTH parties want to get rid of the natural born citizen requirement and Obama’s obvious ineligibility using the less obvious situation for McCain as cover.
The GOP has many more ineligible ccandidates on the bench, Cruz, Rubio, Jindal, Haley.
Plus, Cruz’s case is much different than McCain’s case. Much weaker that is.