Fed independence and tariff disputes dominate a market-closed Sunday

U.S. equity markets were closed on Sunday, leaving QQQ and SPY without a regular-session move. News centered on Goolsbee's defense of Federal Reserve independence, China's response to U.S. tariff pressure on other countries, an anti-tariff declaration backed by more than 1,200 economists, Ishiba's exchange-rate stance, Jensen Huang's Shanghai meeting, and Tesla's Model Y testing in India.