The congressional warning over gaps in US export controls comes as China appears to be making breakthroughs Washington has long sought to block. BENGALURU: US lawmakers chairing key Ho us e committees on Tuesday (Feb 10) urged the State and Commerce Departments to restrict China's access to advanced chipmaking equipment, warning that gaps in export controls threaten national security. In a bipartisan letter, Ho us e Select Committee on China Chairman John Moolenaar and Ho us e Foreign Affairs