With scant details provided by the Trump administration about the contours of the peace deal with Iran, Senate Majority Leader John Thune (R-SD) said on Monday afternoon that he doesn’t yet know enough about the administration’s deal with Iran to determine whether it is a good deal that will prevent Iran from acquiring a nuclear weapon.

“I don’t know enough about it to say,” Thune told reporters. “I think the issues are going to be compliance, and how you can enforce that, and what are the financial incentives that the Iranians have from our country, and what are they conditioned upon.”

The South Dakota Republican said that a positive deal would include financial incentives that are conditioned upon Iran winding down its nuclear program, the disposal of Iran’s enriched uranium and Tehran giving up its capacity to have a nuclear program in the future.

Thune also indicated that he believes the deal should be submitted to Congress for review under the Iran Nuclear Agreement Review Act.

“There are some requirements that are triggered because of the nuclear components of the deal, in terms of notification or informing Congress,” Thune said. “I know there is probably some expectation that there may be a vote at some point, whether that’s on a resolution of disapproval or something. We’ll see. I just don’t know enough about it yet. And I don’t think even the people who follow this stuff closely up here know that much.”

The administration hasn’t publicly commented on the issue of INARA yet, and has offered varying timelines for when it might release the text of the agreement. In media appearances, Vice President JD Vance has been framing specific nuclear issues as part of the next round of talks, rather than the current MOU, which could give the administration an avenue to attempt to dodge INARA review.

Thune said that “somebody” from the administration, whether that be Vance or other officials, “will need to” come to the Hill to brief members.

“For sure, our members are going to have a lot of questions about it,” Thune said.

Sen. John Barrasso (R-WY), the No. 2 Senate Republican, indicated he was similarly in the dark about the agreement.

“I haven’t seen anything from the president in terms of what’s in it. I’ve seen some press reports,” Barrasso told reporters. “I want to see what’s actually in it and I congratulate the president for his continued efforts.”

But asked whether he was concerned that the deal would be an effective surrender to Iran in providing sanctions relief, Barrasso rejected the idea out of hand.

“President Trump is never, ever going to do what you just suggested,” Barrasso said. “He’s not going to accept a deal that doesn’t eliminate nuclear weapons, isn’t enforceable, isn’t verifiable and doesn’t take Iran completely out of what they’ve been doing to try to undermine and attack us for the last 47 years.”