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WATCH: CBP chief Mark Morgan testifies on immigration enforcement challenges

The Senate Committee on Homeland Security and Government Affairs held a hearing June 25 on the challenges facing the Customs and Border Protection agency.

Watch the hearing in the video player above.

CBP Chief Operating Officer and Commissioner Mark Morgan testified before the committee.

Morgan recently joined President Donald Trump in Yuma, Arizona, to mark the 200th mile of a border wall to control immigration along the U.S.-Mexico border, which was a central promise of his 2016 campaign.