The Biden administration is intensifying efforts to curb cheap imports from China, targeting e-commerce platforms like Shein and Temu that have taken advantage of the “de minimis” rule to bypass tariffs on low-value shipments.

The Biden administration will restrict the use of a trade provision that lets China-founded e-commerce giants more easily ship to the U.S., a move that comes amid bipartisan pressure to close what critics regard as a loophole.