Sen. John McCain chafed when asked if there was enough time to consider an Obamacare overhaul bill through regular order, which he says has been a key reason for his reluctance to pass a last-minute attempt to overhaul the law.

The Arizona Republican remains undecided on a bill to give Obamacare funding to states through a block grant. The Senate has less than two weeks to pass the bill before the deadline expires on Sept. 30 to use a tool that lets Republicans bypass a filibuster.