What are the steps for American birth papers to apply for Hague certification for immigration to Singapore?

There are only two steps to certify the American birth certificate in The Hague. It needs notarization first, and then authentication. It needs to provide the original American birth certificate, a scanned copy of the first page of the child's parents' passport, and fill in the certification application form.

First, it is notarized by a local international notary in the United States.

Secondly, it can be issued to the US Secretary of State for certification.