TL;DR: How much longer does it take for getting through immigration services as first-time arriving immigrant compared to ESTA visitor on arrival to the U.S. airport?
Me and my son finally got our immigration visas stamped into our passports and immigration packets handed to us from U.S. Embassy. I'm looking to book us a flight. We will arrive most probably to ORD (Chicago O'Hare) airport, which I know well. I need to book us a connecting flight to our destination, but I'm not sure how much time I need to keep for processing to enter the States when arriving on immigration visa?
When we flied on ESTA, we went through queques with all the arriving aliens, which took us typically about 1-2 hrs spent in the waiting lines and a couple minutes talk with immigration officer. I remember there being separate empty lines for Green Card holders - but I am not sure if we count as Green Card holders when we will get the green card mailed only after we arrive to the States? So it could go faster, if we go into Green Card holder line. But also, the immigration packages are kind of bulky, are they going to go through all that paperwork with us? It could go much slower if they do. All together, I may need 1 or 5+ hours for the layover, I have no clue. Any insight and own experiences on first time immigration visa arrival appreciated.
Thank you.
Michaela