Among the toughest questions posed to the Chicago bid team this week in Copenhagen was one that raised the issue of what kind of welcome foreigners would get from airport officials when they arrived in this country to attend the Games. Syed Shahid Ali, an I.O.C. member from Pakistan, in the question-and-answer session following Chicagoâ(TM)s official presentation, pointed out that entering the United States can be "a rather harrowing experience." ... The exchange underscores what tourism officials here have been saying for years about the sometimes rigorous entry process for foreigners, which they see as a deterrent to tourism.