For sure you have to be careful what you try taking into the US as far as food is concerned. Coming into Canada we often have groceries and are never asked what kinds of food.
Just three days ago I made the mistake of saying we were going to church and a "pot luck" lunch but said we had no food. Well, suddenly we happened to be randomly selected for search. Pulled into garage three agents checked the car and one asked "who packed the food." My mind reeled for a second wondering what I had left in the trunk then again said we have no food. The intent was to go to a grocery store in the US before church knowing the sticky food rules. They also handed us a sheet outlining what is and isn't allowed into the US for food.
We would consider Nexus but usually always land crossing and our Nexus lanes are open only two hours weekday mornings to US and two hours afternoons coming back.
Adrian
You don't think the word "pot" in pot luck had anything to do with the search? ???