The former president undermined negotiations between Jonathan Braun and prosecutors who hoped Braun would testify against other predatory lenders in exchange for his release

Very early in the morning on Donald Trump‘s last day in office, the president announced he was pardoning Jonathan Braun, a loan shark who had been convicted of running a vast marijuana ring. Braun, who at the time was serving a 10-year sentence, was pardoned along with 142 others, including rappers Lil Wayne and Kodak Black.

Trump’s move undermined a years-long federal investigation, The New York Times reported Sunday. The paper also uncovered ties between Braun and the family of Trump’s son-in-law, Jared Kushner.

Federal prosecutors were in the midst of negotiations hoping to secure Braun’s cooperation in a Justice Department investigation into predatory lenders in the merchant cash advance industry when Trump announced his clemency. Investigators felt that an industry insider like Braun could reveal information about predatory lending agreements, but after he was released from incarceration, prosecutors no longer had leverage they could use to compel Braun to talk.