The Free Open Society Project:

…While Republican legislators talk about ensuring that taxpayer dollars aren’t wasted on drug users, they seem decidedly disinterested in imposing drug testing burdens on recipients of taxpayer largesse who are not poor. They are not calling for the drug testing of beneficiaries of corporate tax breaks, for instance, and for the most part they are demonstrably uninterested in subjecting themselves to similar testing…

…The rhetoric surrounding the politics of drug testing the poor suggests that it is aimed at mothers strung out on heroin or meth-ravaged fathers, but the most common drug cited in the failed Florida drug tests was marijuana….