I don't eat any pet food, but the point is, if you want to buy American because you want to support American Labor, or American Ideas, or the American Way of Life,
do so and I don't think that anyone would disagree with you. I know that I would not.
However if you think that America has a lock on being the best in manufacturing just because it is made in America, or products are defective just because they are made in China, you have seriously underestimated the competition.
Again, I applaud you for buying American, but have a valid reason for doing so.