Empty boxes of mifepristone pills fill a trash can at Alamo Women’s Clinic in Albuquerque, New Mexico, in January 2023. Evelyn Hockstein/ReutersCongress gave the US Food and Drug Administration the authority to regulate drugs more than 60 years ago, and in 1962 it was also given the authority to require that drug companies prove that the drugs are effective. Mifepristone, one of the drugs used in medication abortion in the US, was initially approved in 2000, but regulations around its use have shifted since then.For a medicine to be approved by the the FDA, drugmakers needs to meet…