I know a guy who was sent back from chicago. Would be better if you can avoid chicago as POE. Since CollegeFootballRocks said, Dallas sounds strict too.
There was a thread about a student busted in chicago for same reason and he filed asylum rt there. Don't know anything more about that.
Anyone who knows this kind of incident, please mention the name of POE so that other can avoid those cities duriing their entry.

So far,
Chicago
Dallas