WASHINGTON, DC - SEPTEMBER 19: (L-R) Sen. Rand Paul (R-KY), Center for the National Interest Vice Chairman Dov Zakheim and Sen. Chris Murphy discuss legislation to halt the sale of some weapons to Saudi Arabia at the center September 19, 2016 in Washington, DC. After the Department of Defense announced the sale of $1.5 billion of arms to Saudi Arabia, Senators Paul, Murphy, Al Franken (D-MN) and Mike Lee (R-UT) are attempting to block the sale by using a provision of the Arms Export Control Act of 1976 that "provides for special procedures whereby a senator can force a vote on an arms sale by the president." (Photo by Chip Somodevilla/Getty Images)