News Trump’s ex-chief of staff Mick Mulvaney says U.S. has ‘inexcusable’ problems with COVID-19 testing July 13, 2020 Jeanine Santucci, USA TODAY Comments Off on Trump’s ex-chief of staff Mick Mulvaney says U.S. has ‘inexcusable’ problems with COVID-19 testing Trump's former acting chief of staff Mick Mulvaney broke from the administration's stance in an op-ed that criticized coronavirus testing.