621.7  Prohibited sureties.
  No attorney or other officer of the court shall be received as security in any proceeding in court.
[R60, §3446; C73, §2931; C97, §3851; C24, 27, 31, 35, 39, §11251; C46, 50, 54, 58, 62, 66, 71, 73, 75, 77, 79, 81, §621.7]
Similar provision, §636.5