TORONTO (Reuters) -Over two months, Canadian officials scrambled to advise and reassure Canadians wanting to travel to the U.S. after President Donald Trump's executive order on gender, documents show. The order, issued January 20, states the U.S. only recognizes two sexes, requires the government use the term "sex" rather than "gender" and mandates identification documents issued by the government, including passports and visas, be based on what it described as "an individual’s immutable biological classification as either male or female." In a series of emails obtained through a freedom of information request, Canadian officials debated how to respond to concerns and whether and how to update Canada's travel advisory for the United States.