the Harper Silly Ninnies were against legalizing pot because - well because they are against everything - but specifically because there would be carnage on the roads and a massive work load put on the police to take blood tests and so forth for all he high people who were driving slowly and taking fewer risks. Or something.
in fact there has been no change whatsoever in traffic safety. Because all the people who drive high were driving high before.
They estimated 800 blood tests, but have taken only 80 so far. So it was much ado about nothing.
Like Gay marriage.