Why increase in family crossings challenges border resources

U.S. Customs and Border Patrol says over 76,000 migrants crossed into the U.S. from Mexico last month -- twice as many as in February 2018. The increased volume reflects a greater proportion of migrant groups containing family units, for whom immigration authorities are poorly resourced. Amna Nawaz talks to Judy Woodruff from Arizona, where she has been reporting on the situation at the border.