In U.S the most common form of adoption is by adopting a child by 
stepparent. When this adoption process has fully completed, the 
noncustodial parent will no longer hold the legal rights for the 
child which will result in full responsibility and support for the 
child. There are slightly different ways of obtaining the consent 
depending on the state. Some state will require written agreement, 
while others ask both of parents to appear at the court and file legal
adoption papers. Many states will allow various legal adoption forms
where parents should specify child’s personal information including 
name, address, length of residence with parent and birth information.
Along with this form, there should be proving document such as 
certificate, license and consent forms.