The liberals under Captain Moonbeam are hell bent in making drinking driving an absolute liability offense. So never mind the police having to have reasonable grounds, until now they only had to have a reasonable suspicion to put you on an approved screening device for alcohol. With a wave of his magic wand Captain Moonbeam will direct legislation where there is no defense to the charge of over 80mgs or impaired. You are charged you are convicted, end of story. Police do not even need reasonable suspicion, or a hunch. 

The Liberals did the same with the Canadian Human Rights Act some years ago too where there was no defense if someone thought their feelings were hurt.