**EXCLUSIVE** Secret Service just arrested a stowaway who made it onto the Bush press charter plane in Pretoria, South Africa this morning and flew unmolested to here, Entebbe, Uganda. After getting on and off the 747 with absolutely no credentials, he boarded a bus with the rest of the White House press corps and was taken to the Imperial Botanical Beach Hotel on the shore of Lake Victoria -- the same hotel where Bush arrived 90 minutes later. At length, the White House staff noticed that no one seemed to know the guy, so they alerted Secret Service, who arrested...