Is the child in the US in your custody?
How did the child enter the US?
Have you already adopted the child? If so where is the country of adoption.
Depends on the fact pattern.
If you are adopting the child in the US you will need an adoption lawyer in your state.
If the child is in a foreign country you must ensure there is a full and final adoption in that country especially with cases of child abduction so rampant worldwide.
You will find useful information on the state department website and also information depending on whether the country is a signatory to the convention
Some states now require immigration papers of the child prior to adoption.
You are welcome to use the link provided below.