Thousands of migrants join caravan to U.S. southern border

U.S. authorities reported a seven-day average of more than 96,000 encounters along the U.S.-Mexico border in December. CNN’s Rosa Flores reports from Eagle Pass, Texas.U.S. authorities reported a seven-day average of more than 96,000 encounters along the U.S.-Mexico border in December. CNN’s Rosa Flores reports from Eagle Pass, Texas.