A potential nuclear deal with Iran has riled up several high-profile Republican senators and has Democrats hesitant on how to proceed.
Foreign policy voices in the Senate are skeptical.
"We've gone from dismantling their program to managing proliferation," said Sen. Bob Corker, the chairman of the Senate Foreign Relations Committee, on CBS' "Face the Nation."
Corker said it is important for inspections of Iran's nuclear facilities to happen anywhere and at any time. "I think no one trusts Iran," he said.
Currently Iran is negotiating with the U.S. and five world powers on their nuclear program. A tentative agreement announced Saturday would relieve sanctions, but a lot of that agreement, such as when parts of sanctions relief would occur, remains unknown.
The negotiations between six world powers and Iran were supposed to conclude last week but are now scheduled to end on July 7, and a sanctions deal was a major part of any agreement.
A sticking point for Republican Sen. Tom Cotton, R-Ark., is that Iran should be forced to dismantle its nuclear program before getting sanctions relief.
Military action against Iran needs to remain on the table "if our diplomacy was going to be credible," Cotton said on ABC's "This Week." "We can destroy Iran's nuclear facilities and command-and-control facilities and all allies in the region wish we would take a forceful position because it would result in a better deal."
Cotton spearheaded a letter from Congress earlier this year to Iranians saying that the legislative body will need to sign off on any nuclear deal.
Presidential candidate Rick Santorum said on "Face the Nation" that "Iran has never kept an agreement. The interim agreement that is in place right now they aren't living up to."
Congress must approve any nuclear deal before it is finalized, but only has 30 days to do so. The legislative body gets 60 days if the July 7 deadline isn't met.
However, some leading Democrats were ambivalent about hastily voting for any deal.
Sen. Amy Klobuchar, D-Minn., said that senators are reserving judgment and want to see what the deal is.
"Everyone is united in this idea that we have to see what the agreement is before we jump in and say where we are on it," she said on "Face the Nation."
When pressed by host John Dickerson, Klobuchar said that Democrats have bucked the president before and want to see what the deal is before agreeing to do so again.