Sen. Chris Van Hollen (D-MD) questioned Secretary of State Marco Rubio on Tuesday regarding the legality and strategy of the Iran war [1], [2].

The hearing marks the first time Rubio has testified before Congress since the conflict began [3]. The exchange highlights a deepening divide between the administration and lawmakers over the use of war-powers authority and the legality of ongoing military involvement.

Van Hollen pressed Rubio on the handling of the war, specifically focusing on cease-fire negotiations and the broader U.S. foreign-policy strategy [1], [4]. During the proceedings before the Senate Foreign Relations Committee on Capitol Hill, Van Hollen challenged the administration's direction [1], [5].

"This is an illegal war," Van Hollen said, adding that "Trump's foreign policy is a dumpster fire" [1].

Rubio defended the administration's actions during the session [6]. While facing questions on the military role of the U.S. and the prospects for peace, Rubio focused on the possibility of diplomatic breakthroughs.

"I am optimistic about the potential for a resumption in nuclear talks with Iran," Rubio said [3].

Lawmakers used the hearing to seek clarity on how the administration is navigating the conflict and whether the current strategy aligns with statutory requirements for war-making [1], [6]. The session on June 2, 2026 [2], served as a primary venue for critics of the war to demand accountability for the military's role in the region [4], [5].

"This is an illegal war,"

This confrontation underscores a significant constitutional tension regarding the War Powers Resolution. By labeling the conflict 'illegal,' Van Hollen is signaling that a segment of Congress views the administration's military actions in Iran as an overreach of executive authority, which could lead to future legislative efforts to restrict funding or mandate a formal exit strategy.