Canadian Prime Minister Justin Trudeau is shown in a file photo. (Photo by Arindam Shivaani/NurPhoto via Getty Images) TORONTO - Prime Minister Justin Trudeau on Friday announced stricter restrictions on travelers in response to new, likely more contagious variants of the novel coronavirus — including making it mandatory for travelers to quarantine in a hotel at their own expense when they arrive in Canada and suspending airline service to Mexico and all Caribbean destinations until April 30.Trudeau said in addition to the pre-boarding test Canada already requires, the government will be introducing mandatory PCR testing at the airport for people returning to Canada.RELATED: UK variant, South Africa variant, Brazil variant: A guide to known.