Folks, this is not the same thing as the Gulf of Mexico. Trump stated in an official US document (and yes, a Presidential executive order is an official US document whether you like that or not) that the US is claiming all of Lake Ontario. We don't own all of Lake Ontario. I can show you the fucking maps where it's divided RIGHT DOWN THE MIDDLE between us and Canada.

Ergo? Trump has seized a part of Canada by fiat. That will walk if nobody stops him. And it won't be the last thing he seizes.