Democrats, with Elizabeth Warren a top contender to chair Senate Banking, are poised to step up oversight of Nvidia over chip exports and circular financing (Maggie Eastland/Bloomberg)

Maggie Eastland / Bloomberg:
Democrats, with Elizabeth Warren a top contender to chair Senate Banking, are poised to step up oversight of Nvidia over chip exports and circular financing  —  Nvidia Corp. is in for tougher scrutiny from a new Democratic majority in Congress that's set to demand answers …