Originally Posted by StuckinITH

My wife and I always take one each even though we use the Global Entry computers. For if there's a malfunction. And in ORD sometimes there's a special immigration desk for people with no checked luggage that really cuts the time, even from the low time when using the Global Entry computers. And for that exit you need to have the form filled.

The other one, my wife keeps and fills it in advance on the return from the next international trip because her trivial gripe is that the FAs sometimes give the cards late when it's not such a convenient time.