Signed up for IRIS last year. Did the whole NEXUS to GE transition at the begining of the year. Haven't used NEXUS yet but have use GE twice and IRIS a few times. As previous people have caught on, the kiosk process for NEXUS asks 'hard' food questions versus GE's specific ingredients based question. Based on my experiences and my chat with the NEXUS office, NEXUS is on paper (or screen) tougher about food than GE.

The first time I used GE, I said yes to the dairy/eggs question as I had a belgian waffle with me (not processed but packaged). After the paper came out with the big X on it, gave it to the CBP agent behind the kiosk and asked what I had. He said, "That's it?" and stamped my paper and I left for customs. The CBP person at customs didn't notice the stamp at first and started scratching his head. Once I pointed to it, he gave me the singal to head on out.

I agree with the theme - better to be safe than sorry. Even with the X or the NEXUS equivalent, sounds like you have an easy out if you explain what caused it.

Nothing better than seeing the US line 5 rows deep and 2 empty kisoks calling your name. Happy trails!