Did you dump your refrigerator and pantry before crossing?

Fresh veggies are always iffy. Just buy them after you cross. Chicken too. Beef was on the list for a while but that was years ago. Don't take mass quantities of anything or they think it is for resale and then you need an importer permit. Generally a week of two's worth of groceries except what is mentioned above is not a problem at all. Just answer their questions politely. Don't joke, never argue.