Drugs corrupt the environment of an institution.
They breed distrust and undermine the very integrity of the institution. Moreover, tolerance of drug use, evidenced by half-hearted efforts at interdiction, send a confusing, mixed signal to inmates struggling with recovery. The prison's culture must support sobriety if it is to succeed in its mission. Prisons, by their very nature, are dangerous places. For corrections officers in particular, their jobs are difficult enough without the increased problems that drugs create.