Former first lady Laura Bush calls Trump's zero tolerance policy 'cruel'

Immigration Holding Facility
In this photo provided by U.S. Customs and Border Protection, people who've been taken into custody related to cases of illegal entry into the United States, rest in one of the cages at a facility in McAllen, Texas, Sunday, June 17, 2018.
U.S. Customs and Border Protection's Rio Grande Valley Sector via AP