Your US Airways Club membership will give you access to the Presidential Club not your *A Gold domestically. Last time I traveled with a co-worker the President's Club attendant had to refer to US Airways Club's rule pertaining to guest before allowing access, but for your info it is 2 guests.

Unfortunately, *A Gold with the three US carriers (ie UA, CO, or US) doesn't offer club access in the United States, but foreign held *A Gold does. Apparently, a few people credit enough flights to BMI to obtain *A Gold and thus club access domestically.