RCW 9A.72.070
Perjury and false swearing—Irregularities no defense.
It is no defense to a prosecution for perjury or false swearing:
(1) That the oath was administered or taken in an irregular manner; or
(2) That the person administering the oath lacked authority to do so, if the taking of the oath was required or authorized by law.
[ 1975 1st ex.s. c 260 § 9A.72.070.]
Structure Revised Code of Washington
Title 9A - Washington Criminal Code
Chapter 9A.72 - Perjury and Interference With Official Proceedings.
9A.72.020 - Perjury in the first degree.
9A.72.030 - Perjury in the second degree.
9A.72.050 - Perjury and false swearing—Inconsistent statements—Degree of crime.
9A.72.060 - Perjury and false swearing—Retraction.
9A.72.070 - Perjury and false swearing—Irregularities no defense.
9A.72.080 - Statement of what one does not know to be true.
9A.72.090 - Bribing a witness.
9A.72.100 - Bribe receiving by a witness.
9A.72.110 - Intimidating a witness.
9A.72.120 - Tampering with a witness.
9A.72.130 - Intimidating a juror.