U.S. Rep. Jared Golden, D-Maine, voted Thursday to block a resolution restricting President Donald Trump’s war powers in Iran — making him the only Democrat to do so.

The vote from the 2nd District moderate was crucial, as the resolution was defeated by a single vote. If passed and signed into law, the effort would have forced the Trump administration to eventually draw down American forces from the conflict with Iran unless Congress authorized further military action.

The vote came a day after U.S. Sen. Susan Collins, R-Maine, and Senate Republicans defeated a similar effort. That chamber’s vote was the fourth time this year that GOP lawmakers have ceded power to Trump in the Iran conflict.

Golden was the only House Democrat to vote Thursday against the resolution, while U.S. Rep. Thomas Massie, R-Kentucky, was the only Republican to vote for it. U.S. Rep. Warren Davidson, R-Ohio, voted “present” after previously voting in favor of a past effort to put checks on Trump’s Iran actions.

The U.S. and Israel struck Iran on Feb. 28, and a fragile ceasefire is now in its second week. Golden cited the ceasefire in a Thursday statement after the vote. He also voted in March against a war powers resolution from Massie and U.S. Rep. Ro Khanna, D-California.

“I believe we must maintain a strong negotiation position over Iran’s nuclear program, freedom of movement in the international waters at the Strait of Hormuz, and how to achieve a durable peace between our two nations,” Golden said. “At this moment, a resolution like this would weaken our hand.”

The resolution’s sponsor, U.S. Rep. Gregory Meeks, D-New York, and other Democrats have warned that the U.S. is becoming further entrenched in another lengthy conflict in the Middle East. They promised to keep raising the issue through more war powers votes in the coming weeks. U.S. Rep. Chellie Pingree, a progressive who represents Maine’s 1st District, supported the resolution.

Under the War Powers Act of 1973, Congress must declare war or authorize use of force within 60 days — a deadline in the Iran war that will arrive at the end of April. The law provides for a potential 30-day extension, but lawmakers have made clear that they want the Republican administration to soon lay out a plan for the war’s end.

Republicans defended Trump as taking decisive action against an Iranian government that has long terrorized the Middle East and its own people.

While the House vote once again failed, Thursday gave Democrats another opportunity to highlight some of the most negative effects of the war: the billions of dollars spent, the deaths of at least 13 U.S. service members, the soaring gas prices and fissures with long-standing allies who do not support Trump’s actions.

The Associated Press contributed to this report.