On-Again, Off-Again, On-Again...Maybe

What is going on in our rocky thaw with North Korea, and are we losing the "maximum pressure" coalition to keep them at the table? And why didn't we consult the South Koreans before pulling out of the meeting? Meanwhile, President Trump is furious with Kirstjen Nielsen, his homeland security secretary, who he thinks hasn't been tough enough on the border — even as her department orders the separation of families of asylum seekers. Does he expect Nielsen to build the wall herself?Plus, Steven Brill talks about his new book Tailspin with the Left, Right & Center panel.