Boston Mayor Michelle Wu defended the city's police commissioner after criticism from a Trump administration official on immigration.

"Take that badge off your chest, put it in the desk drawer because you became a politician, you forgot what it was like to be a cop.”

The White House's border czar once again singled out Boston on its treatment of immigrants, saying he'll be "bringing hell" to the city. Why it matters: The fight between Boston and the feds illustrates the nation's divide over sanctuary city policies.