She founded the message parlor where New England Patriots owner Robert Kraft is accused of soliciting sex.
And, according to reports, allegedly sold access to U.S. President Donald Trump to clients from China.
Now, Democratic leaders are pushing the FBI to investigate Ms Li 'Cindy Yang and her 'apparent relationship with the president.'
House Speaker Nancy Pelosi and Senate Leader Chuck Schumer released the letter Monday, signed by 4 other lawmakers.
The letter claimed Yang was reportedly a frequent guest at the President's Mar-a-lago resort and that her website, which has been taken down, once offered clients the "opportunity to interact" with Trump and other political figures and offered access to White House and Capitol Hill dinners.
Lawmakers said that if proven, the allegations "raise serious counterintelligence concerns." The Democrats are seeking answers from U.S. intelligence officials about their awareness of Yang and if she had been the focus of earlier probes.
They also want to know if other members of Mar-a-Lago might be using their proximity to the president to offer foreigners access to Trump or those around him.
The FBI had no comment on the lawmakers' letter.