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WATCH: Senate hearing on emergency funding for border security

Acting Homeland Security Secretary Kevin McAleenan appeared before a Senate subcommittee after reports emerged about the White House asking Congress for an additional $4.5 billion in emergency funding for security along the southwest border.

The Associated Press reported yesterday that it had viewed a summary of the White House’s request that included more than $3 billion for humanitarian aid that would bolster the government’s ability to shelter unaccompanied migrant children.

The PBS NewsHour will update this story as it develops.