"The FDA's regulations related to animal testing no longer fully conform with applicable law," writes the Kentucky senator.Congress unanimously passed the FDA Modernization Act 2.0 in December 2022. The law allows drug companies to find alternative methods of assessing their products, without testing them on animals or human beings. The bill was sponsored by Sens. Rand Paul (R–Ky.) and Cory Booker (D–NH). Its goal was to speed up the drug approval process, and to let scientists experiment with approaches methods that are more humane than testing on live subjects. Reason's Elizabeth Nolan Brown aptly summarized the bill's achievements, noting that...