US senator questions differing interpretations of Iran agreement US Senator Lindsey Graham welcomed the agreement between the United States and Iran but expressed concern that Washington and Tehran may not share the same understanding of its terms. In a post on X, Graham said: “I am somewhat concerned that Iran’s view of the agreement seems different than what the American negotiating team is claiming.” The Republican senator also argued that any agreement with Iran should be submitted to Congress for scrutiny. He said the deal should be sent to lawmakers for “a review and a vote”, signalling that questions remain among some members of Congress despite growing support for the diplomatic breakthrough announced by the Trump administration.