By Zen Soo HONG KONG (AP) — Stocks in Asia were mostly down Tuesday, after U.S. President Donald Trump imposed 25% tariffs on all U.S. imports of steel and aluminum. Hong Kong’s Hang Seng index declined 0.62% to 21,388.49, while the Shanghai Composite dipped 0.16% to 3,316.83. Japan markets were closed for a national holiday. […]