He's on parole from a felony conviction, so the rules don't apply in quite the same way. I think, legally, he's still in the custody of the government, which is

He's on parole from a felony conviction, so the rules don't apply in quite the same way. I think, legally, he's still in the custody of the government, which is exactly why he has a parole officer to supervise him. And it's a well-established precedent that felons can lose constitutional rights - the examples that come to mind are felons' voting and gun rights, and sex offenders' freedom of movement.