Tobacco industry once had high hopes for marijuana business USA -- Richard Nixon was in the White House, his "war on drugs" was in full swing, yet Big Tobacco was secretly exploring the possibility of becoming Big Pot. Newly discovered documents from tobacco company archives at UC San Francisco show that major companies in the cigarette industry investigated joining the marijuana business in the late 1960s and early 1970s. The companies were driven then by the same shift in public attitudes that is now pushing legalization around the country. One company even asked a federal counter-narcotics official to secretly secure...