回复：I submit my I-140 to NSC in April 2006. They did not touch

You are not the only who got stuck in USCIS. You can complain here to get yourself releaxed when you really get frustrated. However, it'll be a piece of trash to this forum if you complain here EVERY DAY with meanless information. Pls note, this is a public forum, it's not only you who are in this forum, but a lot Chinese fellows here.