I think your question underlines our point. I believe if we had more effective intelligence, if we were more effectively pre-screening before people landed in Canada, we would have far less of a problem or far less of a concern with respect to the respective rights of individuals arriving. The problem is that we don't know who these folks are; therefore, we cannot make a reasonable assessment of the potential risks or threats they represent to Canada.
Again, the bottom line is a simple one: we need to ensure the security of Canada above all other things. If we have information about this person before they get on an airplane, if we know who that person is, we can make a reasonable and effective assessment of risk.