Judy Woodruff:

And for an opposing view on the immigration crisis, Janet Napolitano. She was secretary of homeland security under President Obama and she was instrumental in immigration decisions, including signing the policy that created the Deferred Action for Childhood Arrivals program, better known as DACA. She's now the president of the University of California system.

Janet Napolitano, welcome back to the program.

You hear what the Trump administration is arguing, that they have no choice, that once people come across the border without documentation and they don't do so at a port of entry, the administration has no choice but to enforce the law, take the parents, prosecute, begin to prosecute them, and take their children away.