Mayor Brandon Johnson and Gov. JB Pritzker delivered their opening salvos Monday against Republican President Donald Trump and his second term in the White House, setting a defiant tone in their defense of immigrant rights and other liberal causes over the next four years.

Chicago is also colder than North Pole, Alaska, where highs are in the mid-20s. A cold weather advisory is in effect until noon on Monday in Chicago, with wind chills as low as 20 to 25 degrees below zero. The advisory will take effect again at 9 p.m. Monday until Tuesday at noon, when wind chills could be as low as 30 degrees below zero.

The National Weather Service issued two advisories from 6 p.m. Sunday to noon Monday, and from 9 p.m. Monday to noon Tuesday.

CHICAGO (CBS) — At least one person was killed and 10 others were wounded in weekend shootings across the city as of Sunday afternoon. The ages of the victims range from 19 to 41. In the first shooting of the weekend, a 29-year-old man was shot in his shoulder just before 10 p.m. in the 8700 block of South Racine Avenue.

Immigrants in Chicago and other U.S. cities have been preparing for immigration arrests since President-elect Donald Trump won the November election.

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U.S. Reps. Jesus "Chuy" Garcia and Delia Ramirez, Democrats who both represent parts of Chicago, were among the elected officials trying to sound the alarm at a press conference on Saturday morning, responding to the reported plans for raids.

Border czar” Tom Homan said the incoming administration is reconsidering plans for an immigration enforcement blitz in Chicago next week after preliminary details leaked.

President-elect Donald Trump's border czar said the incoming administration is now "reviewing" whether to launch removal operations in Chicago.