Christmas, and a lot else, will be more expensive this year for American consumers as Donald Trump's trade wars upend global supply chains. At a factory in China's Zhejiang province that churns out Christmas ornaments for Walmart Inc., it's always been standard practice to add price stickers to packages as the last step before the goods are shipped off to the US. But for the first time in more than 10 years, Walmart has asked the factory to leave price stickers off the items, according to Barry Shan, the Ningbo city-based supplier's vice president, reflecting the deep uncertainty caused by Trump's tariffs. Elsewhere, US retailers are suspending orders and halting shipments as the global supply chain grinds to a near-halt. Trump has announced a 90-day pause before tariffs take effect so that countries can negotiate deals.