The director of the U.S. Bureau of Prisons is resigning amid growing problems in the agency’s handling of the pandemic. Michael Carvajal was appointed to the post in February 2020 by Trump’s attorney general, Bill Barr. About a third of federal prisoners have tested positive for coronavirus, and at least 275 have died of COVID-19. Carvajal’s tenure was also marked by reports of serious abuse and misconduct involving correctional officers. An Associated Press investigation found more than 100 federal prison workers have been arrested, convicted or sentenced for crimes since the start of 2019, including a warden indicted for sexual abuse and another charged with murder.