The main purpose of this legislation, known as the Stephen Hacala Poppy Seed Safety Act, is to prohibit the sale of food products that contain unsafe poppy seeds. The act aims to address health risks associated with contaminated poppy seeds, which have been linked to serious health issues, including fatalities from morphine overdoses. Key provisions of the act include a requirement for the Secretary of Health and Human Services to establish contamination levels for poppy seeds concerning morphine, codeine, and other harmful compounds.