The Trump administration has been planning for weeks to send the National Guard to Chicago, two officials told CNN, as President Donald Trump looks to expand his anti-crime agenda and crackdown on immigration in major cities across the United States.

Both Mayor Brandon Johnson and Gov. JB Pritzker have said any effort by the president to send the National Guard to Chicago to fight crime would be illegal.

The president said he is looking to continue sending troops to major cities after deployments in D.C. and Los Angeles.