A $400 million campaign by the Bush administration to enroll low-income seniors in prescription drug coverage that would cost them just a few dollars per prescription has signed up 1.4 million people, a fraction of the 8 million eligible for the new coverage. At this rate, by some calculations, the government is on track to spend about $250 for each person it enrolls, and even then it would have only 2 million poor senior citizens taking advantage of what is perhaps the most generous government benefit available today. "It's a very, very good benefit," said Deane Beebe, whose organization, the...