Headphones for $10. A garlic chopper for $4.90. A smartwatch for $12. With Temu, you can shop like a billionaire, an ad promises. Meanwhile, US lawmakers are wary of the Chinese e-commerce company, which has gone from unknown to the country’s most downloaded app in a matter of months. The U.S.-China Economic and Security Review Commission released a report last month naming Temu and Shein, the popular fast-fashion retailer, as two Chinese companies concerned about issues related to exploiting loopholes. trade, product safety, forced labor, intellectual property rights violations and more. Shein, which was founded in 2008, has become ubiquitous online as a place to find cheap clothing and accessories,…