According to the National Notary Association | NNA in its “The Notary Answer Book, 1st Edition 2020,” if you are asking a Notary to notarize the signature of a person who is not present, you’re requesting a criminal act. Both you and the Notary could go to jail, be fined or both.

According to the National Notary Association | NNA in its “The Notary Answer Book, 1st Edition 2020,” it is illegal for Notaries who are not attorneys to help other persons prepare documents, especially important documents like yours that have legal ramifications.

If you need help filling out your document, call the office that gave you the document, or the office where you will file it. Or you may contact an attorney who is authorized by law to give you advice about how to fill out your documents.

According to the National Notary Association | NNA “The Notary Answer Book, 1st Edition 2020,” a Notary is not authorized to notarized or certify a copy of a birth certificate, despite what you may have been told by a travel agency or airline. 
If you’ve been told to get a notarized birth certificate to travel to Mexico or another nation, you’ll just have to obtain other proof of U.S. citizenship. The most common document used for proof of citizenship is a U.S. passport.