(2) A person who threatens to do or cause, or
who does or causes, any injury or detriment to another person because the
person believes the other person will or may be or may have been called as a
witness, or will or may serve or may have served as a juror, in any
judicial proceeding is liable to imprisonment for 10 years.
(3) For the
purposes of this section, it is immaterial whether the accused acted wholly or
partly for a reason specified in subsection (1) or (2).
(4) In this section--
"reasonable excuse" includes--
(a) making, or threatening to make, a complaint
about a person to a person or body acting in an official capacity, including
the following--