JB Pritzker objecting to any National Guard deployment and city officials bracing for how the added federal presence could reshape the dynamic on the ground. Mayor Brandon Johnson signed an executive order last week declaring city police would not collaborate with federal immigration agents. It also requires Chicago officers to wear uniforms and not wear masks to "clearly distinguish them from federal agents." Some protesters and local elected officials claimed they saw Chicago officers clearing the way for ICE agents and protecting their vehicles. On Thursday, the District of Columbia sued to stop President Donald Trump’s deployment of National Guard during his law enforcement intervention there.