So you are taking the boys out of school? They fine us in Nottingham. Hope you have a lovely time.
Don't think I could live in Nottingham!
Not just in Nottingham; I thought it was a national thingy. You used to be allowed two weeks and then they clamped down and now it's at the Head's discretion. Still, it's complete twaddle anyway. The boys are going to learn far more on a trip to France than they will cooped up in a post-Christmas classroom for a couple of days. A term time holiday just sitting on a beach at an all-inclusive hotel doing nothing? Shouldn't be allowed. A term-time holiday exploring a foreign country and all it has to offer? Definitely should be allowed.
For how long does Chicago want you here? I don't blame you for not wanting to leave until you are guaranteed re-entry. I am assuming you had no trouble re-entering from France as you were re-entering from an EU country.