Jud, I hope you didn't really mean that the USGA was looking for accommodation from the City of Chicago

Lemont is a long way from the City of Chicage. The problems with the USGA were with the folks who run Cook County -- and the Jemseks have had far fewer problems in their dealings than they did out South (I believe Mr. Lavin has posted numerous times on here about his personal knowledge as to the mistakes that the USGA made in that regard).
Is there anyone out there who thinks that 30k people per day can be transported in to Erin Hills in a reasonable period of time? The course may be "25 to 30 minutes from Milwaukee," but fat chance access to that many people can be effected in anything close to that time period.