Immigrants and groups advocating for them have been preparing since Trump made mass deportations a signature pledge of his campaign. Trump has often been critical of Chicago, which has some of the country’s strongest protections for people in the country without legal status.

But as of Sunday night, it was unclear when and where the mass deportations of undocumented immigrants would take place.

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

President-elect Donald Trump's incoming administration plans to immediately order a series of deportation raids targeting illegal immigrants, according to multiple reports Saturday.