Willis Tower

Sen. Mark Kirk (R-Ill.) expressed irritation that Chicago is no longer a world-class city when it comes to building heights. The issue arose during a Senate floor discussion on the Terrorism Risk Insurance Act. Chicago's Willis Tower ranks #11.
Jul 18, 2014   Politico
Spire or antenna; what sits atop One World Trade Center in Lower Manhattan? The answer isn't just semantics, it will determine if the building is indeed taller than Chicago's Willis Tower. A decision by the official arbiter could come next week.
Nov 9, 2013   NPR