Shoppers got a little relief this week from a giant tariff on previously cheap, duty-free goods from China. But the tariffs that do remain are still poised to derail the shopping habits of millions of Americans who shop at ultra-low-priced e-commerce sites like Shein and Temu.

Prior to President Trump's second term, there was little back and forth between the U.S. and China on tariffs. Here's what to know.

Trump hasn't completely backtracked from his tariffs, but he backed down enough that he’s ceded most of his leverage.