Top Border Patrol official Gregory Bovino has been summoned to appear in court after a judge's concern about federal agents' use of tear gas on protesters in Chicago. CNN's Priscilla Alvarez explains. Read more: https://cnn.it/47bGyJy | CNN

Senior Border Patrol Chief Gregory Bovino must appear in federal court daily to report on immigration enforcement operations in Chicago. That order came after Bovino testified before federal Judge Sara Ellis today on questions surrounding the use of chemical agents by immigration enforcement officers in the city and suburbs. Bovino, a chief of the Border Patrol sector in El Centro, California, was recorded on video throwing a tear gas cannister on Thursday during a clash between agents and prote