The Illinois General Assembly passed a record income tax increase on individuals and businesses in 2011. And Gov. Pat Quinn promised that it specifically was “designed to pay our bills.” By the end of the current fiscal year, lawmakers will have collected a total of $25.7 billion in new revenue from the 2011 tax hike....

As the Illinois General Assembly heads back to Springfield for veto session next week, here is a quick look at what elected officials have signed on to the Illinois Policy Institute’s legislative efforts to prevent lawmakers from amending the state’s constitution to permit a progressive income tax hike, which would increase taxes on 85 percent...