Wall Street stocks tilt lower as Alphabet's poor results and China tariff hike plans cloud the market. U.S. stock futures are in the red as shares in Alphabet plunge 7% and Advanced Micro Devices falls 9%. Japan's yen surges as wage numbers rekindle talk of a Bank of Japan rate hike. Chinese markets fall as hopes of a meeting between Trump and Xi to avert the tariff war are doused. U.S. Postal Service suspends parcels from China and Hong Kong as Trump ends a trade provision. Private sector business surveys show China's services activity expanded at a slower pace in January.