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.

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 Ald. Brandon Reilly, who represents downtown on city council. He deemed the weekend display a "photo op" for U.S. President Donald Trump, echoing other leaders.

Memphis, Tenn., and Portland, Ore., are also bracing for a federal law enforcement surge.

Trump has called the expansion of federal immigration

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