Why it matters: The alleged operation offers a rare window into how Beijing has tried to gain access to and influence U.S. political circles.

While this suspected operative's activities appear to have ended during the Obama administration, concerns about Beijing's influence operations have spanned President Trump's time in office and will continue to be a core focus for U.S. counterintelligence during the Biden administration.

The woman at the center of the operation, a Chinese national named Fang Fang or Christine Fang, targeted up-and-coming local politicians in the Bay Area and across the country who had the potential to make it big on the national stage.

Through campaign fundraising, extensive networking, personal charisma, and romantic or sexual relationships with at least two Midwestern mayors, Fang was able to gain proximity to political power, according to current and former U.S. intelligence officials and one former elected official.