WASHINGTON — Congressional leaders from both parties are closely monitoring the high-level U.S.-Iran negotiations underway in Switzerland, as Vice President JD Vance leads talks with Iranian officials on implementing an interim agreement, congressional aides and lawmakers said on Sunday.
The discussions at the Bürgenstock Resort in Switzerland focus on Iran's nuclear program, a potential ceasefire in Lebanon and other elements of a memorandum of understanding signed earlier this month. Lawmakers have emphasized the need for transparency and congressional review of any final outcomes.
Senate Minority Leader Chuck Schumer, a Democrat, called for the administration to release details publicly and brief Congress immediately. Republican Sen. Lindsey Graham expressed that he was pleased with aspects of the interim deal but concerned about differing interpretations between the U.S. and Iran.
"Under our law, any nuclear deal with Iran will be sent to Congress for review and a vote," Graham said in a statement. He added that Vice President Vance should participate in presenting any final agreement to lawmakers.
The interim agreement halted direct hostilities, included commitments related to the Strait of Hormuz and set a 60-day period for further negotiations. Some Republican senators, including Bill Cassidy, have described the framework as potentially "the worst foreign policy blunder in decades," citing concerns over concessions.
Democrats have also raised questions. Sen. Chris Murphy noted the deal ends the conflict but highlighted ongoing uncertainties. Bipartisan groups of lawmakers have previously written to the administration stressing that any agreement must prevent Iran from acquiring nuclear weapons.
Details of the specific agenda in Switzerland and potential outcomes remain subject to the ongoing talks, officials said. Congressional staff have been in contact with the administration for updates as delegations from the U.S., Iran, Pakistan and Qatar convene.
As of Sunday evening, no immediate announcements had emerged from the negotiations or from Capitol Hill regarding new legislative steps. Lawmakers indicated they would continue to watch developments closely.
