So, the recent vote on Keystone XL was not a vote on the Bill, itself, but a vote on cloture? IOW, the Bill is still “live” and could be voted on if they find one more vote?
I am not a rules hawk, but i believe so. Cloture having failed, the bill is still technically open for debate. Any Senator could again ask unanimous consent to proceed to a vote and, if there is objection, move for cloture.