The guards were contractors and most of the inmates were from other states, sent their as overflow.
Most of the inmates were returned to their state and the Guards joined the remainder in prison after convictions.
This had nothing to do with Bush. He just happened to be governer at the time. Just like those inmates being convicted of a crime. Don't do the crime if you can't do the time. The issue was uncovered, and it was dealt with.
end of story