There's also 300M+ people in US. Which means virtually none of these places relies only on international tourism. There should be a huge change in tourism for them to notice enough to actually lobby for political change. And such huge changes, even if they would happen - which is not a given, for each person who have read a horror story about a Canadian turned away at the border there are thousands of people who never heard about it - it would take a long time.

Yes, but we're not Costa Rica. It's not grievous. And business interests aren't supposed to be the measuring stick dictating policy, some argue.