Senate Blocks New Democratic Effort to Limit Trump’s Military Authority in Iran

The US Senate has rejected a fourth attempt by Democrats to restrict President Donald Trump’s ability to expand military operations against Iran, as the conflict approaches the legal time limit for deployments not formally authorised by Congress.

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In a 52–47 vote on Wednesday, senators defeated a motion that would have advanced a war powers resolution designed to curb the president’s authority to continue hostilities without explicit congressional approval.

The measure sought to force a vote on requiring the withdrawal of US forces from combat operations involving Iran unless Congress formally declared war or passed a specific authorisation for the use of military force.

Two senators crossed party lines during the vote: Republican Rand Paul of Kentucky opposed the Republican majority, while Democrat John Fetterman of Pennsylvania voted against advancing the resolution.

The vote marked the fourth time since the conflict began on 28 February that Senate Democrats have tried to pass legislation limiting the president’s war powers.

Democrats push to restrain military action

The resolution was introduced by Democratic Senator Tammy Duckworth of Illinois, a former US Army helicopter pilot, who argued that Congress has a constitutional responsibility to oversee decisions about war.

Speaking at a news conference on Tuesday, Duckworth said lawmakers could not allow the conflict to continue without stronger congressional involvement.

“We cannot let this chaos continue unchecked,” she said.

Duckworth also urged Republican lawmakers to support the effort, describing the measure as a way to end what she called an “illegal war of choice”.

Democratic leaders indicated they would continue pressing the issue despite repeated defeats.

On the Senate floor before the vote, Senate Minority Leader Chuck Schumer called on Republicans to support the resolution as the war approaches its seventh week.

“Republicans have voted against this resolution three times now,” Schumer said. “But as the war drags on for 47 days with no end in sight, they should join us on this resolution and end the war once and for all.”

He added that Democrats planned to continue forcing votes until the conflict ends or Republican senators shift their position.

Tensions over Trump’s rhetoric

The vote was the Senate’s first formal action on the conflict since President Trump escalated his rhetoric ahead of a deadline demanding that Iran reopen the Strait of Hormuz.

Last week, Trump warned that failure to comply could lead to consequences so severe that “a whole civilization will die,” remarks that drew criticism from Democrats and several Republicans.

Republican Senator Lisa Murkowski of Alaska said the comments could not simply be dismissed as negotiating tactics.

Shortly after the remarks, the president announced that the United States and Iran had agreed to a two-week ceasefire.

Focus turns to 60-day war powers deadline

While most Republican senators have supported the administration’s military actions so far, some have suggested their backing may change if the conflict continues beyond the legal limit set by the War Powers Resolution.

Passed in 1973 after the Vietnam War, the law was intended to restrict a president’s ability to conduct military operations without congressional approval.

It requires the president to notify Congress within 48 hours of deploying armed forces into hostilities and generally limits such engagements to 60 days without formal authorisation.

The period can be extended to 90 days if the president certifies that additional time is required to protect US forces.

Several Republican lawmakers have indicated that the approaching deadline could prompt closer scrutiny.

Senator John Curtis of Utah wrote in a recent opinion article that he supported the administration’s actions to defend US interests but would not back continued military operations beyond 60 days without congressional approval.

Senator Mike Rounds of South Dakota also said lawmakers expected the administration to outline its strategy as the conflict moves toward the two-month mark.

“We have to know what the next steps are,” Rounds told reporters.

Senate Majority Leader John Thune said many Republicans currently support the administration’s approach, arguing that the US had achieved significant results in the conflict.

He said if the administration’s objectives are met, Congress may not need to consider authorising the war formally.

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Adapted by ASEAN Now. Source 16 April 2026