I have a three year old with no father on his birth certificate. I am married now with a 3 months. Old. My husband wants to sign my oldest son birth certificate. Is this allowed by law? There is no established father for my son. Thank you. (I live in Miami, FL)

As long as he is the real bio father he could be added.

If he is not the real bio father no, he will have to adopt the child.

Just because he is not listed the real bio father ha every legal right as if he was listed,