The main purpose of this legislation is to address the threat posed by the New World screwworm fly, which can harm livestock and agriculture. The bill aims to establish a facility for rearing sterile screwworm flies, which can help control and reduce the population of these pests. Key provisions of the legislation require the Secretary of Agriculture to begin constructing one or more modular rearing facilities within 180 days of the bill's enactment. These facilities will not only breed sterile screwworm flies but also distribute them to areas at risk of infestation.