Sen. Bill Cassidy criticizes President Donald Trump’s first-stage Iran peace deal, saying it is a “worst foreign policy blunder”

Sen. Bill Cassidy, R-La., criticized President Donald Trump’s first-stage peace deal with Iran on Wednesday, describing it as a foreign policy mistake and drawing a comparison to Ronald Reagan’s approach to the Soviet Union era.

Cassidy, speaking in connection with the agreement’s initial terms, said it was “the worst foreign policy blunder in decades,” according to the report. He also said Reagan was “rolling over in his grave,” adding emphasis to his contention that the deal departs from what he characterized as a stronger historical stance.

The remarks underline ongoing intra-government debate over the direction of U.S. policy toward Iran and the standards lawmakers expect when evaluating agreements intended to shape Tehran’s conduct. Cassidy’s comments were framed as opposition to the substance of the first stage itself, not as a request for additional time or process, the report said.

Cassidy’s position also reflects the role of congressional oversight in foreign policy, particularly when the White House pursues a structured diplomatic track that lawmakers may view through the lens of enforceability, verification, and consequences for violations. The report does not specify which enforcement or verification mechanisms Cassidy targeted.

In the wake of his criticism, Cassidy’s comments place pressure on the administration to clarify the agreement’s objectives and practical requirements for any subsequent steps. The report does not indicate whether Cassidy called for immediate legislative action or specific votes.

The disagreement adds to a broader pattern in which members of Congress publicly assess U.S. Iran-related diplomacy at different stages. Cassidy’s remarks come as lawmakers weigh how to balance diplomacy with deterrence and how to judge whether an arrangement limits risk to U.S. and allied interests.

For now, the central dispute reported is political and rhetorical, with Cassidy characterizing the first-stage deal as deeply flawed. The next steps, based on the public record described in the report, would depend on additional detail from the administration and any congressional review that follows.