Proposed changes to Canada’s impaired driving laws could allow police to show up at your doorstep and demand a breath sample a full day after you arrive at home, according to a criminal lawyer studying the issue.

Officers may also be within the law to lay charges within two hours of a driver exiting their vehicle.

The changes outlined in Bill C-46, currently before Parliament alongside the marijuana legalization legislation, are raising a number of red flags for legal experts — some who say the plan blatantly steps on constitutional rights.

“If you are completely sober, you drive your car to a wine tasting or cocktail party. You plan to leave it there, and you have some drinks at the party. If the police have reason to come and question you, and they smell some alcohol on your breath, you can actually be charged with drinking after driving,” Ottawa-based criminal lawyer Michael Spratt told CTV’s Power Play on Wednesday

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