Business leaders and employers across the United States, including in Chicago, are raising alarms over immigration raids as President-elect Donald Trump prepares to implement his mass deportation policy.

President-elect Donald Trump’s incoming border czar vows that the biggest city in the Midwest will be “ground zero” for mass deportations, and officials across the political spectrum in Chicago are bracing for a showdown.

Chicago Mayor Brandon Johnson reiterated his opposition to anticipated immigration reform policies when President-elect Trump returns to the White House this week.