July 18, 1956: The Narcotics Control Act/Daniel Act is passed, establishing mandatory minimum sentences for drug offenders.

July 24, 1967: The Beatles pay for a full page advertisement in a British newspaper, which states, "The law against marijuana is immoral in principle and unworkable in practice." The ad calls for the legalization of marijuana possession, release of all prisoners on marijuana possession charges and government research into medical uses.

July 23, 1985: Tulio Manuel Castro Gil, judge of the Superior Court of Bogota, Colombia, is assassinated as he climbs into a taxi, following his indictment of Pablo Escobar for the murder of Lara Bonilla.

July 20, 1995: The total number of US marijuana arrests since 1965 passes the 10,000,000 mark, according to an estimate by NORML.

July 22, 1997: Drug Czar General Barry McCaffrey says, "In the view of the nation's scientific and medical community, marijuana has a high potential for abuse and no generally accepted therapeutic value." He says this despite an editorial from the January 30, 1997 issue of the New England Journal of Medicine that states, "Federal authorities should rescind their prohibition of the medicinal use of marijuana for seriously ill patients and allow physicians to decide which patients to treat."

July 19, 2001: The Washington Post reports that a confidential informant for the Drug Enforcement Administration compromised dozens of prosecutions across the United States by falsely testifying under oath and concealing his own arrest record, but the DEA continued to employ him for 16 years despite detailed knowledge of his wrongdoing, according to interviews, court records and an internal report by the agency.

July 19, 2001: In conjunction with a two-day NIDA-directed Ecstasy conference, Senator Bob Graham (D-FL), introduces the "Ecstasy Prevention Act of 2001." An initial analysis by the Center for Cognitive Liberty & Ethics (CCLE) shows that this new bill, while giving lip-service to generating more scientific data about the health consequences of MDMA (Ecstasy), directs over 22 million dollars to increased law enforcement, media propaganda, and the creation of a new MDMA drug test.

July 21, 2004: The Multidisciplinary Association for Psychedelic Studies (MAPS), Prof. Lyle Craker, and Valerie Corral file lawsuits against the DEA, HHS, NIH, and NIDA for obstructing medical marijuana research.