CHICAGO —

The sight of armed, camouflaged and masked Border Patrol agents making arrests near famous downtown Chicago landmarks has amplified concerns about the Trump administration's growing federal intervention across U.S. cities.

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As Illinois leaders warned Monday of a National Guard deployment, residents in the nation's third-largest city met a brazen weekend escalation of immigration enforcement tactics with anger, fear and fresh claims of discrimination.

"It looks un-American," said Chicago Alderman Brandon Reilly, who represents downtown on the City Council. He deemed the Sunday display a "photo op" for President Donald Trump, echoing other leaders.

Memphis, Tennessee, and

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