“We do and should have a say in where these weapons go," Kentucky Senator Rand Paul (R-KY) said.

Paul is fighting back against efforts by the State Department and the Obama Administration to sell over $1 billion worth of military equipment to Saudi Arabia. Even Democratic Senators are joining the pushback, like Minnesota Senator Al Franken. He said “it’s in America’s best interest to call a timeout on this sale." They’re worried it could lead to a bigger problem, war.

"What are they going to do, sell arms to Saudi Arabia, they bomb Yemen, then there’s refugees then we’re going to bring those refugees to the United States it’s this vicious cycle and this vicious circle that I think we need to do something about," Paul said.

Human rights organizations have serious concerns too.

"This is a very bad time for the US to be selling weapons to Saudi Arabia or the other allies in the region that are dropping bombs or engaging in armed conflict in Yemen because millions of Yemenis civilians are suffering as a result," Sunjeev Bery, Advocacy Director at Amnesty International said.

Bery fears the displacement that can be caused by further devastation in Yemen and that the new U.S. deal could add to that risk.

"On the one hand the Obama administration has sold over $100 billion worth of weapons to Saudi Arabia on the other hand they’re announcing a couple hundred million dollars in humanitarian aid to Yemenis’ civilians who are suffering," Bery added.

The White House said quote: "even as we assist the Saudis regarding the defense of their territorial integrity, it does not mean that we will refrain from expressing our concern about the war in Yemen and how it has been waged."

The White House told us all potential US defense sales are carefully assessed. They said they are aware of the congressional concerns and have noted them in their recent conversations with the Saudis.

The Arms Export Control Act of 1976 allows a Senator to force a vote on an arms sale by the President.

In addition to the Senate action, 64 members of the U.S. House of Representatives signed a letter to President Obama in August urging him to delay the sale.