The U.S. Senate on May 19th passed a resolution to limit the President's ability to take military action against Iran with a vote of 50:47. This rare bipartisan contest (with 4 Republicans defecting) sends a strong signal of easing geopolitical risks and has become a key catalyst for the short-term rebound of Bitcoin (BTC).

The crypto market is extremely sensitive to Middle East tensions. Previously, escalating US-Iran tensions often triggered panic fund outflows and leveraged liquidations; with the resolution to limit military action, the probability of full-scale war is directly reduced, and global geopolitical risk premiums have subsequently diminished. Investors' risk appetite quickly returns, with stop-loss orders and short positions closing out, jointly pushing BTC briefly higher to around $77.2k. Mainstream cryptocurrencies like Ethereum (ETH), XRP, and others also rebound in tandem.

However, this resolution has only completed procedural steps so far, and still requires a vote in the House of Representatives, facing the risk of veto by the President. Geopolitical uncertainties remain. If the bill to limit military action ultimately passes, it will benefit crypto market liquidity and long-term confidence; if tensions escalate again, the crypto space is likely to return to volatility. Overall, this vote marks a key victory for anti-war forces in the U.S., providing important macroeconomic support for BTC's rebound.