[galleyfox]

Go to their website where they explain the full details. Two organizations based in San Francisco and Denver merged, but they operate in 28 states.

Their rationale for Chicago is the following (though Chicago's growing healthcare industry and large Catholic population surely played a role.)

"The combined organization will establish its corporate headquarters in Chicago, a new location for a new organization. This decision was made because Chicago is centrally located, has convenient access to all parts of the country where our ministries are located, and offers good infrastructure to support a national organization."