This has nothing to do with intentions and everything to do with the fact that walls always serve two functions (intentionally or not). One is to keep people out and the other is to keep people in. You can't have one without the other.
The Great Wall of China is still standing and very likely Trump's wall would be standing for centuries if not intentionally destroyed. Rarely does the political situation stay the same for the lifetime of any wall. If US society collapses, the Amish will be running a taxi service. Good luck getting to Canada if you live in Texas.
alright. Adam's solution ends this debate anyway. It would be up to each respective state to decide on what to do with its border. Yes?
You are asking an anarchist what states should do.
No. This is Adam's plan. I am helping him promote it.