You all seem to be missing an important point: 'gnu' is suggesting that only welfare recipients, who he presumably sees as his social inferiors, should have to take a urine test. There is no mention in his post of anyone who he considers to be his social superiors having to take one.

So I assume, 'gnu' that you think it's OK for bankers, for example, to take prodigious amounts of coke while they're gambling with our hard earned cash and losing billions in the process?

Yes, this politics thing is very simple, isn't it'gnu'? All you have to do is oppress and punish the poor and all will be well and we'll all live happily ever after!