When the Postmaster General, pursuant to the acts of Congress now in force, satisfies himself that any given person is obnoxious to the statutes in question, issues a ‘fraud order‘ accordingly, and on being called to account in the courts certifies that he has reached his conclusion on evidence satisfactory to himself, the presumption is that his conclusion is right. It may not have been reached by the ordinary methods of courts, the rules of evidence may have been disregarded, the investigation may have been secret and ex parte; but these are details for which relief must be sought from Congress and not from the judiciary— the presumption still exists.