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.

Oil prices have spiked during the conflict, with disruptions to the Strait of Hormuz, the narrow waterway through which roughly a fifth of the world’s petroleum passes, adding inflationary pressure to an already strained global economy.

How crypto markets responded

Bitcoin rebounded to approximately $77,200 following the Senate’s approval of the resolution. Geopolitical risk has become one of the most reliable drivers of short-term crypto volatility over the past several years. When tensions escalate, risk assets sell off. When de-escalation signals emerge, they bounce.

Lower geopolitical tension typically translates to lower energy prices, which in turn eases inflation expectations, which makes risk assets more attractive.

What this means for investors

The symbolic nature of the resolution is the elephant in the room. Non-binding means the White House can, and almost certainly will, ignore it.

Traders who positioned for de-escalation after the House vote on June 3 had to sit through three weeks of uncertainty before the Senate confirmed the signal.

Energy markets remain the transmission mechanism to watch. Disruptions to the Strait of Hormuz directly affect global oil supply, which affects inflation expectations, which affects central bank policy, which affects risk appetite.