Posting at Power Line, recent addition Lloyd Billingsley documents the many ways in which the late Sen. Feinstein was a lobbyist for China and the CCP. There were plenty of them.
Plus one of her staffers spent 20 years simultaneously working for her and spying for China, and he was more than the "driver" that was widely claimed. Feinstein also profited from her Chinese connections in financial ways.
And we also need to remember that she was formerly mayor of San Francisco, at least some of its decline happening during her tenure. Her career was scarcely blemish-free.