An internal memo that was leaked to the public revealed the Chicago Police Department is instructing officers to wait for a supervisor instead of immediately helping Department of Homeland Security personnel, and even to “leave the scene” if the situation involves an immigration arrest.

Trump directed his aim at Eddie Johnson, the superintendent of the Chicago Police Department, during his Monday speech.

“People like Johnson put criminals and illegal aliens before the city of Chicago, and those are his values, and frankly those values to me are a disgrace. I will never put the needs of illegal criminals before I put the need of law-abiding citizens. It’s very simple to me,” he said.

“So when Eddie Johnson and many other people from lots of other regions and areas support sanctuary cities, it’s really, in my opinion, a betrayal of their oath to the shield, and a violation of his duty to serve and to protect,” the president continued. “The courageous police officers of Chicago … they could solve this problem quickly.”

The speech revolved largely around the topic of immigration, with Trump inviting both Customs and Border Protection (CBP) acting commissioner Mark Morgan and ICE acting director Matthew Albence onto the stage to say a few words.

The president said Afghanistan, by comparison, is a safer place than Chicago.

“The people of Chicago — the people want this. And with the families of Chicago, not the criminals and gang members that are here illegally. And not the stupid politicians who have no idea what they’re doing,” he said.