India, March 23 -- Five of the United States' NATO allies, including Canada, issued fresh travel warnings as President Donald Trump's immigration officials repeatedly detained several tourists at the border. Denmark, the United Kingdom, Germany, and Finland have revised their guidelines.

Some of the warnings note that the State Department has suspended its policy allowing transgender, intersex and nonbinary people to update the sex field on their passports.

Ottawa updated its travel advisories for the US and China. Citizens staying in the United States for over 30 days will need to register, or face penalties. Canada's update on China comes after Foreign Affairs Minister Melanie Joy confirmed that China executed four Canadians in recent...