Sen. John McCain (R-Ariz) said Tuesday on the Senate floor that Sen. Rand Paul's (R-Ky.) efforts to block the National Defense Authorization Act validates Democrats' arguments for reforming the filibuster

“I find it disappointing that one member of the United States Senate feels that his particular agenda is so important that it affects the lives and the readiness and the capabilities of the men and women who are serving in the military and our ability to defend this nation,” McCain said. “I think it’s hard to answer to the men and women in the military with this kind of behavior, but I will leave that up to the senator from Kentucky to do so.”

Paul said he would filibuster the NDAA unless an amendment guaranteeing the right to a trial for Americans accused of terrorism went up for a vote in the Senate.  

McCain said the hold "lends some credence to the argument that maybe we ought not to do business the way that we are doing it here in the United States Senate," McCain said.

After McCain singled out "the senator from Kentucky," Paul's office said that as of mid-Monday he had no specific objections to the bill.

Senate Majority Leader Harry Reid has been leading a charge for filibuster reform. Senate Minority Leader Mitch McConnell has been opposed to changes to the rules, which would limit  the minority's ability to block legislation.