Mr. Speaker, I understand the question. To me, this is not a major departure from what is currently happening. If someone currently travelling to the United States gets off the plane and changes their mind, what are they going to do? Get back on the plane and leave? That does not work. Clearing customs in Canada is more efficient. Rights are protected under the Canadian Charter of Rights and Freedoms, but nothing really changes. When someone arrives in the United States, they will be subject to the same restrictions as they are right now.
In the House of Commons on March 6th, 2017. See this statement in context.