The Justice Department on Wednesday requested documents from nearly two dozen jurisdictions to show if local law enforcement is sharing information with federal immigration authorities — and threatened to issue subpoenas if they fail to cooperate.

In letters sent to the 23 jurisdictions — including Chicago, New York City and Los Angeles, among others — the Justice Department said it was requesting that they provide "any orders, directives, instructions or guidance to your law enforcement employees."

“I continue to urge all jurisdictions under review to reconsider policies that place the safety of their communities and their residents at risk,” Attorney General Jeff Sessions Jefferson (Jeff) Beauregard SessionsTrump's policies on refugees are as simple as ABCs Ocasio-Cortez, Velázquez call for convention to decide Puerto Rico status White House officials voted by show of hands on 2018 family separations: report MORE said in a statement.

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“Protecting criminal aliens from federal immigration authorities defies common sense and undermines the rule of law. We have seen too many examples of the threat to public safety represented by jurisdictions that actively thwart the federal government’s immigration enforcement — enough is enough,” he said.

So-called sanctuary cities, which limit their cooperation with federal immigration enforcement, have increasingly come under fire since President Trump Donald John TrumpUS reimposes UN sanctions on Iran amid increasing tensions Jeff Flake: Republicans 'should hold the same position' on SCOTUS vacancy as 2016 Trump supporters chant 'Fill that seat' at North Carolina rally MORE took office.

Sessions has repeatedly called for tougher measures for the cities, including the withholding of federal grants.

Trump made the issue central to his presidential campaign in 2016, arguing that sanctuary city policies prevent law enforcement from keeping Americans safe.

Earlier this month, Trump's pick to run Immigration and Customs Enforcement (ICE) called for a crackdown on sanctuary cities. He said politicians who run them should be charged with crimes.