Legal Question in Family Law in Washington

If I were you, I would write my ex-wife a letter, sent by certified mail with a return receipt. In the letter, I would recite the paragraph that you recite above from the Parenting Plan, then indicate that you have given her ample notice (two months) and if she continues to refuse to cooperate in getting a passport for your child that you will file a motion in court to get the passport application signed.

Tell her that she has 7 days to comply, or call you to make arrangements to meet at a passport issuing office, such as a post office, to sign the application. If nothing happens or she refuses to cooperate, then you file a motion to enforce the Parenting Plan in the court where the Parenting Plan was issued. Depending on the county, you'll have to give between 5-14 days' notice.

You'll need the motion and a declaration in support of the motion, as well as a note for motion calendar (the specific form depends on which county this is from). You'll need to file copies with the Court clerk, a working copy to the judge, a copy to be served on your ex-wife, and a copy to keep for yourself. Check out courtforms.wa.gov for specific templates.