President Donald Trump gives a presidential 'pardon' to the National Thanksgiving Turkey Butter in the Rose Garden of the White House November 26, 2019 in Washington, DC. While Butter may be safe, Paul Manafort still faces risks, experts say. Chip Somodevilla/Getty Images President Trump's pardons leave some of their subjects open to additional prosecution, experts say. His former campaign chair Paul Manafort could still be prosecuted for specific crimes he wasn't pardoned for. Even Michael Flynn, who received a wider-ranging pardon, could still have it tested by courts. Visit Business Insider's homepage for more stories. On his way out of office, President Donald Trump issued more than 100 pardons, mostly to his personal friends and political allies.A number of those pardons were for people convicted of federal crimes linked to the Mueller investigation - including his former National Security Adviser Michael Flynn, campaign chairman Paul Manafort, and advisors Roger Stone and George Papadopoulos.Trump was sure to malign Mueller's investigation in his pardon notices.