The Preventing Unnecessary Resource Expenditures Act (PURE Act) addresses the significant burden placed on federal and state crime laboratories by the current requirement to establish methamphetamine purity in prosecutions. This requirement, originally intended to target higher-level dealers, is now obsolete because nearly all illicit methamphetamine in the United States is of high purity, primarily supplied by Mexican cartels. The bill aims to streamline prosecutions, reduce resource waste, and ensure that sentencing accurately reflects the severe threat methamphetamine poses to communities. Specifically, the PURE Act amends the Controlled Substances Act by striking references to specific weights of pure methamphetamine that trigger mandatory minimum sentences. Instead, for certain offenses, it introduces language focusing on "a mixture or substance containing a detectable amount of" methamphetamine, thereby eliminating the need for purity testing. Furthermore, the legislation directs the United States Sentencing Commission to review and amend sentencing guidelines for methamphetamine offenses. These revised guidelines must be sufficiently stringent to deter and reflect the harms caused by such crimes. The Commission is also instructed to consider providing sentencing enhancements for offenses that involve: a large number of victims; a pattern of continued and flagrant violations; the use or threatened use of a dangerous weapon; or result in the death or bodily injury of any person. This comprehensive approach seeks to modernize federal drug enforcement strategies for methamphetamine, aligning them with current drug trafficking realities and ensuring effective justice.