No slowdown in influx of Mexican patients[From special news section entitled "The Border -- Immigration, Trade, Crime, Culture and Politics"] By Tim Steller NOGALES, Ariz. - Immigration inspectors are trying to limit the number of poor Mexican patients they wave across the border to Arizona hospitals, but there's no evidence the effort is working. Tucson Medical Center is on pace this year to treat more patients given medical waivers -or, humanitarian parole - at the border than it did last year. The hospital treated 25 such patients last year at a cost to TMC of $1.5 million, said Robert Guerrero,...