May 27, 1963: President Nathan M. Pusey of Harvard University announces that an assistant professor of clinical psychology and education has been fired. The man dismissed was Dr. Richard Alpert, later known as "Ram Dass."

May 26, 1971: In tapes revealed long after his presidency ended, President Richard M. Nixon says, "You know it's a funny thing, every one of the bastards that are out for legalizing marijuana is Jewish. What the Christ is the matter with the Jews, Bob, what is the matter with them? I suppose it's because most of them are psychiatrists, you know, there's so many, all the greatest psychiatrists are Jewish."

May 25, 1973: The NBC Evening News reports that 28 marines and 18 sailors handling the president's yacht were transferred and reassigned from Camp David due to marijuana offenses.

May 24, 1988: The domestic hashish seizure record is set (still in effect today) -- 75,066 pounds in San Francisco, California.

May 24, 1993: At 3:45pm, Juan Jesús Cardinal Posados Ocampo, the archbishop of Guadalajara, is assassinated at Hidalgo International Airport in Guadalajara by San Diego gang members hired by the Arellano-Felix Organization. As the archbishop's car arrives in the parking lot across the street from the terminal, a young man opens the door and opens fire, while half a dozen other gunmen spray the scene killing the driver and five bystanders, including an old woman, her nephew and a startled businessman with a cell phone in his hand.

May 28, 1994: President Clinton's appointed director of the Drug Enforcement Administration, Thomas Constantine, says in a Washington Times interview: "Many times people talk about the nonviolent drug offender. That is a rare species. There is not some sterile drug type not involved in violence -- there is no drug user who is contributing some good to the community -- they are contributing nothing but evil."

May 22, 1997: Milwaukee, Wisconsin, Mayor John Norquist signs a measure into law decriminalizing first time possession of small amounts of marijuana after the proposal squeaks by the city council.

May 23, 2000: Eighty-five US troops arrive in Guatemala to participate in the two-week-long "Operation Maya Jaguar," intended to provide training for Guatemalan police, to carry out seizures of illegal drug shipments, and to facilitate joint counternarcotics operations.

May 22, 2003: Maryland becomes the ninth state to relax restrictions on medicinal marijuana use for seriously ill patients when Governor Robert L. Ehrlich, Jr. signs a bill reducing the maximum penalty to a $100 fine. The law goes into effect on October 1. Ehrlich, the first Republican governor to sign a bill relaxing penalties for medicinal use of marijuana, signs the measure despite pressure from the Bush administration to veto it.