It’s a mathematical property of regions of a 2D space that 3 will naturally meet at a point, but 4 or higher have to be contrived to meet at a point. In the US we do have the 4 corners, which is where Arizona, New Mexico, Colorado, and Utah, so there is precedent.
That’s the easy question: yes. The hard questions are “when?” and “how can we effectively get ready given the lack of political will?”