Canadian Prime Minister Justin Trudeau has taken the unprecedented step of invoking the Emergencies Act to crack down on anti-vaccine mandate protests.
Trudeau said the scope of the measures would be "time-limited", "reasonable and proportionate" and would not see the military deployed.
Hundreds of demonstrators remain in Canada's capital city.
On Sunday, law enforcement cleared anti-mandate protesters at the Ambassador Bridge in Windsor - a critical pathway for Canada-US trade - after a week-long stalemate.
What began as a rally against a new rule that all truckers must be vaccinated to cross the US-Canada border, or quarantine upon return, has grown into a broader challenge to all Covid health restrictions.