As Artificial intelligence becomes another front in the contest between Washington and Beijing, U.S. lawmakers are examining the growing use of Chinese artificial intelligence models by American companies. CNBC reported that policymakers are weighing how to limit exposure to systems built by Chinese firms while businesses continue looking for cheaper tools.Chinese models have gained ground in the United States because they have narrowed the performance gap with American systems while often costing far less to use. The issue has drawn attention from the House Committee on Homeland Security and the House Select Committee on China, which opened a joint investigation…