Nvidia shares fell 8.69% amid fears about tariffs and increased scrutiny of GPU shipments that may be in violation of US export controls

Nvidia shares fell nearly 9% on Monday after President Donald Trump confirmed that tariffs from Canada and Mexico will go into effect on Tuesday. The chipmaker's shares retreated on a bad day for the market. The Dow, of which Nvidia is a component, tumbled 800 points, or 1.8%, and the Nasdaq…