1. That the offender is an executive or judicial officer; and
2. That he
   (a) makes general rules or regulations beyond the scope of
       his authority or
   (b) attempts to repeal a law or
   (c) suspends the execution thereof.

Arts 239-241 punish interference by public officers of the
executive or judiciary with the functions of another
department of government to keep them within legitimate
confines of their respective jurisdictions.

Legislative officers are not liable for usurpation of powers.