That's different. Fed's have no day-for-day. They do almost all of their sentence!
Most inmates hate Federal time, rather plead to a state charge that face Federal time! Unless your a 'white collar' criminal. For them, they have 'Country club' prisons on park like settings.
Different kind of prisoner in the Fed system. A lot of Tax evaders, & white collar offenders. On the other side, the really bad guys in Fed prison are from organized crime, terrorists, and bank robbers! Oh yeah & marijuana growers!
The state gets most of the violent criminals and all the child molesters, what a mix!
You'll have to look here to track his even longer, Federally funded, career:
http://inmate-finder.com/index2.htm
jdog