State and local leaders across the country are bracing for a tidal wave of aggressive immigration policies and possible mass deportations that President Donald Trump has vowed to enact in the hours and days following his inauguration Monday.

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.

Immigration officers may be making their way to Chicago in the coming days. It follows a campaign promise from incoming President Donald Trump to begin mass deportations across the country.

Margelis Tinoco, a migrant from Colombia, reacts after receiving news that her U.S. Customs and Border Protection (CBP) One appointment was cancelled, on the inauguration day of Donald Trump's second presidential term,

Donald Trump has vowed to begin enacting the largest mass deportation operation in U.S. history on Day 1 of his presidency, with one aide saying enforcement will begin “the moment that President Trump puts his hand on that Bible and takes the oath of office” on Monday.