So a person is subpoenaed by Congress to provide documents and give a deposition. The person refuses, is indicted and convicted. Can the person then be subpoenaed again for documents and testimony and then go through the process (indictment, conviction, etc) again.
In other words, aside from the 1 year maximum sentence and small monetary fine for a contempt charge, is there anything else Congress can do to compel the provision of evidence (a warrant be issued for documents, etc.)?