Typically, there are about four or five calls a day that will bring officers in Nassau County to New York City. Going forward, they will have get permission from a supervisor first — who will evaluate the situation, contact the NYPD and send back-up.

Suffolk police has a similar plan in place.

"I will not send my cops in to NYC and risk their careers, their livelihoods, their lives because some politicians are changing the rules,” said Nassau Police Commissioner Patrick Ryder.

On Thursday, New York City Mayor Bill De Blasio signed in to law a chokehold ban that prohibits officers from sitting, kneeling or standing on suspect's back or chest.

"I have faith that we're at a moment in history where everyone is ready to do new things and do them better," the mayor said.

Commissioner Ryder said he's for reform, but it has gone too far.

"They've never walked a mile in a cops shoes, they don't know what it takes to arrest somebody. It's difficult,” he said.

Commissioner Ryder said an arrest involving kneeling on the small of a person’s back, the core of the body is prohibited in the city. Ryder said that puts not only the officer at risk, but the person they're arresting.

"We will always go in there for emergencies and we will definitely go in to defend another officer,” Ryder said. “A NYC cop on the other side. We are going to go, we are going to help them, but we are just going to be a lot smarter about what we are doing."

Suffolk police issued a statement to News 12 Saturday morning saying, "Any enforcement action in New York City now requires the approval of a division chief."