Austin "Jack" DeCoster and Peter DeCoster both pled guilty, as "responsible corporate officers" of Quality Egg, LLC$,$ to misdemeanor violations of $21$ U$.$S$.$C$.331($a$)$ for introducing eggs that had been adulterated with salmonella enteritidis into interstate commerce. The district court' sentenced Jack and Peter to three months imprisonment. The DeCosters appeal, arguing that their prison sentences and $21$ U$.$S$.$C$.333($a$)(1)$ are unconstitutional, and claiming in the alternative that their prison sentences were procedurally and substantively unreasonable. We affirm.