Both chambers of Congress have now voted to demand President Trump either end US military involvement in the Iran conflict or come to Capitol Hill for explicit authorization. The Senate passed the war powers resolution on June 23 by a 50-48 margin, following the House’s 215-208 approval on June 3.

The resolution is non-binding, which means it carries no legal force to actually halt military operations. But it’s the first time both chambers have acted in concert under the 1973 War Powers Resolution framework.

A rare bipartisan rebuke

In the House, four Republican representatives crossed the aisle to vote with Democrats. In the Senate, Republican Senators Rand Paul, Susan Collins, Lisa Murkowski, and Bill Cassidy all voted in favor.

The US-Iran conflict has now stretched past three months, dating back to US-Israel military strikes on February 28. The estimated cost has reportedly exceeded $100 billion.