there should be no drug testing whatsoever, nor should there be goberment welfare. welfare should be up to the churchs and community's.
i'm pretty sure tom jefferson would feel the same way
but on the other hand, if u get government help u should have to obey their rules
if you asked for the help and it was not forced upon you.
My main point being, do away with welfare altogether and this wouldn't even be an issue. It's not the government's job to teach morality imo. that's the churchs job.