House Speaker Nancy Pelosi (D-CA) said Sunday on ABC’s “This Week” that climate change has contributed to the surge of migrant children crossing the U.S.-Mexico border. Pelosi said, “There are more children, about 600, 700 more children, unaccompanied children coming over the border. This is a humanitarian challenge to all of us. What the administration has inherited is a broken system at the border, and they are working to correct that in the children’s interest. I’m so pleased that the president, as a temporary measure, has sent FEMA to the border to help facilitate the children going from one 72-hour...