Putting drug lord Joaqun El Chapo Guzmn on trial in a U.S. court could offer a peek into how far Mexicos biggest drug cartel has penetrated government institutions and private enterprises on both sides of the border.

But first, Mexican officials would have fly Guzmn to the United States -- a process that could take years to approve. And his extradition may lead to a speedy guilty plea that reveals nothing to the public.