I wouldn't have supported the Washington initiative. The idea that a driver can be forced to undergo a blood test and be penalized for something they may have smoked ages ago is terrifying.
I agree it's less than ideal, but they can't test you without probable cause. So as long as you aren't driving erratically with a car reeking of weed you shouldn't have anything to worry about.
Since when has probable cause been anything like a surefire safeguard in the War on Drugs? Do people seriously not see being forced to have your blood tested by the police as an invasion of privacy? If that's not, I don't know what is. It's just not worth it.
Thankfully the Supreme Court is taking up this issue in the context of warrantless blood tests for alcohol, where there is a good chance it will be struck down.
