Bitcoin and other risk assets are bracing for heightened volatility as the U.S. Supreme Court prepares to rule on the legality of President Trump's 2025 tariffs. The decision, expected at 10:00 AM ET on February 20, 2026, could significantly impact trade, government revenue, and global markets. The case challenges Trump's authority under the International Emergency Economic Powers Act to impose broad tariffs, with lower courts previously ruling against the administration. Prediction markets indicate a high likelihood that the Supreme Court will deem the tariffs illegal, with Polymarket and Kalshi pricing a roughly 26% chance of upholding the tariffs. If struck down, importers may receive refunds for duties collected since early 2025, potentially escalating trade tensions. Bitcoin, currently trading at $67,445 with a market cap of $1.35 trillion, is expected to experience turbulence alongside equities and bond markets. The ruling coincides with key U.S. economic data releases, including Q4 GDP and the PCE Price Index, which may further amplify market volatility. A decision against Trump could lead to significant fiscal implications, including potential Treasury refunds and widened deficits, adding to the uncertainty for crypto traders.