Rand Paul has effectively single handedly blocked a bi-partisan bill to place yet more crippling economic sanctions on Iran, by demanding an amendment to prevent the White House using the legislation as an authorization to attack the country.

Senate Majority Leader Harry Reid (D-NV) wanted to immediately pass the sanctions bill by unanimous consent Tuesday. However, Paul intervened and blocked it, in order to ensure that unauthorized use of military force against Iran does not transpire.

Paul’s one sentence amendment reads: “To clarify that nothing in the Act shall be construed as a declaration of war or an authorization of the use of force against Iran or Syria.”

“Our Founding Fathers were quite concerned about giving the power declare war to the Executive,” Paul said on the Senate floor. “They were quite concerned that the Executive could become like a king.”