When Holling is crossing the border from the US into Canada, he is asked for his passport by the Canadian Border Agent. A passport was not required of US citizens to cross into Canada before January 23, 2007, some 13 years after this aired.
When Maggie is helping Joel unload the food, she says: "Canned mushrooms?" . . . and then proceeds to set the cans on the counter but the picture on the label sure does looks like it is (in actuality) canned corn.