WASHINGTON — Congressional Republicans remain cautious about President Donald Trump’s recently signed memorandum of understanding with Iran, as key details of the agreement have yet to be disclosed to lawmakers or the public. Although the document was electronically signed by Trump, Vice President J.D. Vance, and Iranian parliament speaker Mohammad Bagher Ghalibaf on Sunday, it had not been shared with even top congressional leaders as of Tuesday.

Several Republican senators expressed skepticism about the deal’s viability and effectiveness without having full access to its terms. Senator John Kennedy (R-La.) voiced doubt that Iran would honor any commitments, while emphasizing his desire to review the agreement personally. Senate Majority Leader John Thune (R-S.D.), a member of the influential Gang of Eight—a group usually privy to sensitive national security information—confirmed he had not yet received a briefing on the deal.

“I think until the White House actually furnishes us the specific memo, it’s hard to react,” Thune said in an interview. He indicated that while he respects the president’s efforts, the details remain crucial. “Like anybody else, we want to see the devil’s in the details.”

Trump has asserted he plans to publicly release the terms, pledging to hold a press conference where he will read the agreement “word by word” to ensure accurate media coverage. However, the White House has not provided a clear timeline for when this disclosure will occur, adding to uncertainty among lawmakers.

According to available information, the memorandum is expected to reopen the Strait of Hormuz without tolls for a 60-day period. This window will allow for final decisions on Iran’s stockpile of highly enriched uranium, which U.S. officials hope to down-blend and leave inside the country as part of the agreement. Alongside this element, the deal reportedly includes provisions for sanctions relief and the unfreezing of billions of dollars in funds to facilitate reconstruction efforts in Iran.

Despite these emerging outlines, many aspects of the deal's impact on Tehran’s nuclear program and military capabilities remain unclear. This opacity has fueled competing narratives and concern among Republicans about the concessions made by the U.S. after almost four months of conflict.

Vice President Vance is scheduled to lead the U.S. delegation at a signing ceremony in Switzerland on Friday, though Trump has not ruled out joining the event. The administration’s cautious approach to information sharing continues to temper enthusiasm among lawmakers even as they await further details.