Madoff is awaiting sentencing.
It is a reasonable trade-off, 30 to 40 years of life as a multi-billionaire for spending the last 10-15 years of your life in a federal prison.
Maybe what the Judge should do is not than sentence him to federal prison..
Rather what he should tell Madoff is that they have request to extradite him to Mexico or Saudi
Arabia or Yeman or Bostswana or Kazakistan and remind him that the local dictator in each of the last few locations had their dollar dominated assets invested in his fund .
If Madoff does not want to cooperate with federal authorities and tell who helped him implement his Ponzi scheme maybe we should see if the authorities in these countries would get him to talk.
Sounds like a good trade-off to me.