The Republican-led U.S. Congress has backed resolutions that could block President Trump from continuing hostilities in Iran, reflecting growing concern among members of his party about the three-month-long conflict.

War Powers Resolution

Congress passed the War Powers Resolution in 1973 as a check on presidential power in response to the unpopular Vietnam War. The Act requires the president to inform Congress within 48 hours of hostilities and says military action begun without Congress’ approval must be terminated within 60 days, unless there is an emergency.

With Iran, the 60-day deadline was May 1, which Trump addressed by declaring that the hostilities had been “terminated” by a ceasefire, despite continuing attacks and a blockade of Iranian ports. Legal experts said that argument might not survive judicial scrutiny.

Resolutions Face Significant Hurdles

Both resolutions face significant hurdles. The Senate measure has survived only a procedural vote and has not passed the full chamber. Even if it is passed, to go into effect it must also clear the House, whose Republican leaders are unlikely to allow a vote.

The separate measure passed by the House this month would have to pass the Senate, where aides said they were waiting for the parliamentarian to decide whether it is “privileged.” If not, Republican Majority Leader John Thune of South Dakota, who rarely breaks with Trump, is not expected to allow a vote.

The U.S. Constitution says only Congress, not the president, can authorize the use of military force, except for short-term operations or to counter an immediate threat. Backers of the resolutions say bipartisan congressional approval sends an important signal that lawmakers are trying to take back their power to declare war and rein in Trump’s White House.

Original reporting: Appleton, WI News Feed (HLL/CB) — read the source article.