Washington faces growing debate as senior US leaders admit that key parts of the US Iran agreement are still not fully settled. Vice President JD Vance said the deal is still in an early stage and many details will only be decided during further talks with Iran. His comments come as Republican lawmakers raise concerns about transparency, enforcement, and long-term impact. The US Iran agreement was announced on Sunday as a memorandum of understanding aimed at ending conflict and reducing tensions in the region. It is expected to be formally signed in Geneva on Friday. The plan focuses on reopening the Strait of Hormuz, lifting a US naval blockade, and creating financial incentives for Iran if it meets set conditions. JD Vance described the document as very short and general. Speaking in an interview with CNN, he said the agreement is only about one page long. According to him, the most important parts still need to be worked out in technical negotiations between US and Iranian officials. Vance said the US Iran agreement is not yet a final peace deal. He explained that many key issues are still open. These include how compliance will be checked, who will monitor Iran’s nuclear activities, and how enforcement will be handled if Iran does not follow the rules. Republican lawmakers in the US Senate have also expressed doubt. Several senators said they have not received full briefings on the agreement. Senate Majority Leader John Thune said even experienced lawmakers do not fully understand the deal yet. Thune said he had not been directly briefed by the White House. He added that enforcement and compliance are the biggest concerns. According to him, any agreement must clearly explain how Iran will be monitored and what actions will be taken if it breaks the rules. Other Republican senators shared similar concerns. Some questioned how they can support a deal that has not been fully shared with Congress. Senator Thom Tillis said that without full details, it is difficult to take the agreement seriously. One major issue raised by lawmakers is Iran’s nuclear program. The US Iran agreement is expected to address how Iran’s nuclear material will be controlled. This includes highly enriched uranium that is believed to remain at damaged nuclear sites. President Donald Trump has not yet fully explained how the agreement will manage Iran’s nuclear capacity. Lawmakers are asking who will verify Iran’s compliance and who will oversee the removal or destruction of sensitive nuclear material. Financial terms in the US Iran agreement have also raised questions. Reports from US officials suggest the deal may include sanctions relief and access to frozen Iranian funds. It may also include a large reconstruction fund worth up to 300 billion dollars, depending on Iran’s compliance. According to officials, Iran would only receive financial support if it meets strict conditions. These conditions are expected to include reducing its nuclear program and following international monitoring rules. JD Vance said Iran would not receive any money unless it fully meets its obligations. He also said the reconstruction fund would be supported by Gulf states in the region rather than directly funded by the United States. Vance added that the full text of the agreement is expected to be released soon, allowing lawmakers and the public to review it in detail. The US Iran agreement follows years of tension between Washington and Tehran. Iran had previously agreed to limit its nuclear program in a 2015 deal with the Obama administration. However, that agreement collapsed after President Trump withdrew the United States during his first term. Since then, relations between the two countries have remained tense. Trump has often criticized the earlier agreement, saying it allowed Iran access to frozen funds without strong enough restrictions on its nuclear program. Republican Senator Lindsey Graham, a long-time critic of Iran’s nuclear ambitions, also expressed concern. He said Congress must review the full memorandum before any final decision is made. Graham said the agreement appears different depending on which side explains it. JD Vance responded to these concerns by urging lawmakers to wait for the official text. He warned against relying on claims from Iranian hardliners or political interpretations. According to him, only the written agreement should be trusted. As the Geneva signing date approaches, pressure is increasing on the White House to clarify the US Iran agreement. Lawmakers from both parties are expected to demand detailed briefings once the full document is released. The coming days are likely to shape whether the agreement gains political support or faces stronger opposition in Congress.