"Certainly - But he could veto the bill, and tell them to resubmit with that clause removed. It'd bounce it back down, and start the process again - Upping the stakes on both sides."

It would be interesting to see what his supporters say if that happens. Remember how Obama did not do this with the NDAA that allowed indefinite detentions? His supporters were claiming that nothing could be done because it is suicidal to veto funding for the troops.