Rep. Kam Buckner (D-Chicago) speaks at a news conference at St. Sabina Catholic Church in Chicago’s Auburn Gresham neighborhood Wednesday with Gov. JB Pritzker, Mayor Lori Lightfoot and Chicago Police Supt. David Brown. [Ben Szalinski/The Daily Line] 

Days after a teenager was detained by police while in possession of a so-called ‘ghost gun' following the murder of a 16-year-old boy at Millennium Park in Chicago, Gov. JB Pritzker signed a bill to make Illinois the first state in the Midwest to ban the sale and possession of guns that lack serial numbers.