*US PREPARES ACTION TARGETING ALLIES' CHIP PLANTS IN CHINA: WSJ
*MOVE IS PART OF BROADER EXPORT CONTROL CRACKDOWN ON TECH TO CHINA
*U.S. SEEKS TO REVOKE WAIVERS FOR SAMSUNG, SK HYNIX, AND TSMC THAT ALLOW THEM TO USE U.S. TECH IN CHINESE FACTORIES WITHOUT CASE-BY-CASE LICENSES