The New York Times reported last week that Mr. Huang had a close relationship with an executive that U.S. officials determined was funneling information to Chinese intelligence.
A request for Jensen Huang, Nvidiaβs chief executive, to speak represented a shift for Republican congressional leaders, who have largely taken a hands-off approach to the tech industry.
Polls show the sister of the late Senator Lindsey Graham in a virtual tie with her Democratic opponent, Dr. Annie Andrews. An upset was unthinkable just a few months ago.