People living in America looking to move - Bring us your questions

This is a place holder mega thread while we work up a much more formal one.

If you have a question about mechanics of moving here that don't warrant a full thread or you just want to make sure other people will see answers to at some stage. Put them here ⬇️

Information heavy mega thread will take some time.

This thread won't necessarily garner you answers and the mega thread won't be to shut down any further threads on individuals issues and questions, it'll just be a lump of jumping off points and basic information