text:  And from the listeners who support this NPR station. From NPR News, this is All Things Considered. I'm Elsa Chang. Here in California, we're expecting record-breaking heat this week, with temperatures above 100 degrees in parts of the state. Humanitarian aid workers say they're bracing for a crisis as migrants increasingly cross through dangerous parts of the southern border. NPR's Jasmine Garce has been reporting near San Diego.