Ambassador to the United Nations George Herbert Walker Bush at podium in Sheraton Ft. Worth, talking about the number one social problem in the United States: drugs. Says it is not only an issue here, but an issue around the world. Says the U.S. is the world's main source of amphetamines, LSD and barbiturates. African American man wearing yellow suit and black bow tie, ostensibly a waiter at the event, leaning against wall, listening. U.S. Senator John Tower (R-TX) at podium, talking about U.S. defense budget; says the President (Nixon) proposed an increase in defense spending.