Talk about seeing the error of his ways. John J. Dilulio, Jr., the man who once co-authored a book with two former drug czars that described America’s drug war as “the most successful attack on a serious social problem in the last quarter-century,” has now reversed course, writing in the journal Democracy that it is “insane” to “expend scarce federal, state, and local law enforcement resources waging ‘war’ against [marijuana] users.” Specifically, Dilulio, who served for eight months in 2001 as director…