Europe is facing a massive new migration crisis because of the Russian invasion of Ukraine and Canada should prepare to provide asylum to those fleeing the violence, says a Canadian security expert.

Prime Minister Justin Trudeau says the government can revoke the Emergencies Act now that the crisis in Ottawa and Canada's border crossings has calmed down.

"Even though the blockades are lifted across border openings right now, even though things seem to be resolving very well in Ottawa, this state of emergency is not over," Trudeau said at late morning news conference.

Police arrested two of the main organizers behind an antigovernment demonstration on Parliament Hill late Thursday.

The notices state the Emergencies Act gives police the power to seize vehicles that are part of the demonstration and ban people from travelling within a certain area.

Vaccinated travellers will no longer need a molecular COVID-19 test to enter Canada starting Feb. 28 because the COVID-19 situation in Canada has improved, the federal health minister announced Tuesday.

The government will use that act to force towing companies to remove big rigs and other vehicles that are blocking highways and other critical infrastructure, establish zones where public assembly is not allowed, and require banks to suspend or freeze accounts suspected of supporting the blockades, including those belonging to companies whose trucks are part of the convoy.