Governor Pat Quinn has signed a historic measure, making Illinois the 16th state to allow gay marriage, the Chicago Tribune reports.
This new law now redefines marriage in Illinois from an act between a man and a woman to a union between two people. This bill won't take effect until June 1, 2014, when the first marriage ceremonies can take place. Civil unions could also be converted to marriages within a year of the law taking effect.
Here's a general overview of gay marriage in Illinois and the country: