Illegal where? In Belize where he is wanted for murder anyway? I think it's fair to say he is simply burning his bridges to a country he has no intention of returning to and this could be part of the reason he is not going back: " McAfee has refused to turn himself in for questioning saying he fears Belizean police would kill him."

I think he is confident the US is not going to allow his extradition although the US does have an extradition treaty with Belize.