Mark Morgan, chief of the US Border Patrol, testifies at a Senate Homeland Security and Governmental Affairs Committee hearing on 'Initial Observations of the New Leadership at the US Border Patrol' on Capitol Hill in Washington on Nov. 30, 2016. Nicholas Kamm/AFP/Getty Images
A former Border Patrol chief in the Obama administration who was removed by President Donald Trump joined the experts supporting a border wall.
Mark Morgan, a former FBI agent, served as Obama’s Border Patrol chief for most of 2016 and was asked to leave the position by the Trump administration in 2017.
