Legal Question in Immigration Law in Virginia

Re: immigration

You should adhere to the instructions for a U.S. citizen in your particular circumstances(i.e., outside the U.S. filing petition for alien relative) which probably allow for either way that you've referenced.

I doubt, however, that you would be permitted to have it mailed from your sister's address in Chicago which might even be adversely interpreted as somewhat misleading on your part.

Check if the children are US citizens

Were you a US citizen at the time of your children's births?

If you were a US citizen when a child is born, that child may have been born a US citizen. As a US citizen, the child does not need anyone to file an immigration petition for the child.

If a US citizen, what the child needs is proof of the child's US citizenship. For the proof, you will need to contact the US Embassy/Consulate where the child was born and provide the requested documentation. Once the US Embassy/Consulate verifies the documentation, the child will be provided with proof of US citizenship and a US passport.