From the press release:

The following was released today by the Illinois State Rifle Association (ISRA):

The ISRA is calling upon all lawful American firearm owners to stop doing business with AON Corporation and its subsidiaries. This call for a boycott comes after published reports disclosed that AON is bankrolling a fundraiser for the political arm of the nation’s most radical gun control organization. Not only is the fundraiser being financed by AON, it is also being held in a posh club atop AON’s Chicago headquarters.

More details at the link.