If the birth certificate is issued by an official authority of the state where the birth took place (for example, the department of vital statistics, state registrar, etc.) and has an official seal, then usually no additional certifications are required (exceptions exist for certian states). However, prior to sending us the original document, we advise you to scan/take a photo of it front and back and email it to us for review so we can make sure the document has proper signature(s) and seal(s). Please visit Our Services page and follow instructions to begin the process of making your birth certificate legal in a foreign country.