Chicago is bracing for a possible National Guard deployment while Memphis and Portland, Ore. prepare for the arrival of National Guard troops.

The latest examples of creeping federal law enforcement and military presence in U.S. cities occurred as Memphis prepares for the arrival of additional federal authorities.

Armed federal agents patrolled downtown Chicago on Sunday as President Donald Trump sent 200 National Guard troops to Portland, Oregon, a move opposed by the governor and challenged in court.

"Cities Together" held a news conference Tuesday to share how troops and a surge of federal agents are affecting Portland, LA, Memphis, and D.C.

How you see Portland, Oregon, depends on who you listen to. The president wants Americans to believe that Portland is a war zone.

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President Trump is expected to expand his use of National Guard troops across a number of U.S. cities this week, including Portland, Oregon. In Memphis, CBS News has learned a multi-federal agency task force will likely start patrols by mid-week.

T he State of Oregon and the City of Portland have gone to federal court to block President Donald Trump ’s decision to place 200 Oregon National Guard troops under federal command from deployment in Portland.