Medicine: Laetrile Crackdown

Of the thousands of Americans who visit the seedy Mexican border town of Tijuana each year, many aim not to live it up, but simply to live. For more than a decade, one of Tijuana's busiest spas has been a clinic operated by Dr. Ernesto Contreras Rodriguez, 60, who, in the eyes of his patients, offers that most elusive of medical miracles: a cancer cure. The heart of his treatment, a drug called Laetrile, is banned in the U.S. and Canada as a phony remedy; but it is perfectly legal in Mexico, where Contreras...