In its most basic definition an apostille is a confirmation of a foreign document, similar to our notarizations. Check with your state to see if they can do this for you. I was born in Georgia and they have a process for getting it done that isn't crazy expensive like some places I have heard about. Also, my FI is from Texas and the cost is very reasonable through them as well. The information for Georgia was easy to find on the Department of Vital Statistics website but I found the info for Texas in a random FAQ page so you may need to check around. I don't know if this service is available in all states, just the two I looked at but it might be worth checking. Good luck!!