The Economist Intelligence Unit cited Chicago's improving government, health care, transportation infrastructure, quality of higher education, and global business climate.  The airports in the Chicago area and the ability to service international flights was specifically noted in the report.  

This study marks yet another story highlighting the appeal of Chicago, "The Second City."  Other stories have been the cover article for Time magazine, the cover article for New York Times magazine, and prominent featuring in a series of articles in The Financial Times.