1. Disobedience w/o legal excuse to summons issued by the Congress or any of
   its committees or subcommittees;
2. Refusal of any person present before a legislative or constitutional body or official to:
    (a) to be sworn or placed under affirmation;
    (b) to answer any legal inquiry; or
    (c) to produce books, documents, records etc. when required to do so by the said
        bodies in the exercise of their functions;
3. Restraining another from attending as witness in such body; or
4. Inducing disobedience to a summons or refusal to be sworn.


The testimony of a person summoned must be upon matters into which the
legislature has jurisdiction to inquire.