9 GCA § 52.25: Unavailability of Certain Defenses.

It is not a defense to any offense defined in § 52.15 or § 52.20 that:

(a) the oath was administered or taken in an irregular manner;

(b) the authority or jurisdiction of the person administering the oath was defective, if the defect was excusable under any statute or rule of law;

(c) the statement was subject to a proper objection, whether or not such objection was made; or

(d) the defendant mistakenly believed the falsification to be immaterial, where materiality of the statement is an element of the offense.