"The initial reaction is one of a spike... Now we're up by one third of 1%... Communication services still the best sector." The market hates uncertainty. The IEEPA authority allowed the President to enact tariffs "overnight." Striking this down forces the administration into a bureaucratic process (investigations) which takes time. This removal of "stroke-of-the-pen" risk reduces volatility and encourages capital deployment into equities. LONG. The removal of the "emergency" tariff mechanism is a net positive for broad market sentiment and stability. The President's upcoming State of the Union address introduces new, legally compliant protectionist measures that spook the market.