In an emotional testimony to the House oversight committee on Friday, Democratic representatives Alexandria Ocasio-Cortez, Ayanna Pressley and Rashida Tlaib described conditions at an immigrant detention center, decrying alleged mistreatment happening 'in front of the American flag'. During Ocasio-Cortez's testimony a congressional staffer fainted. The testimony comes as Mike Pence was due to travel to Texas on Friday to tour a facility and participate in a roundtable with border patrol and members of the Senate judiciary committee