Watch the mayor's remarks in the player above. The signing is expected to begin at noon.

Chicago Mayor Brandon Johnson is slated to sign an executive order on Saturday afternoon regarding federal immigration enforcement and President Donald Trump's threat to deploy the National Guard as part of a crackdown on crime.

The mayor's office said the signing will take place at 12 p.m. ET.

Johnson's planned action is related to President Trump's threat to send the National Guard to the city and federal efforts to step up immigration enforcement .

Two federal law enforcement officials have told NBC News that ICE, Border Patrol and other agencies will send numerous agents and equipment to the city in an effort to increase arrests of undocumented immigrants. The operation could begin as soo

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