What really drives me crazy is some parts of the left that treat borders as wishful and not as the ultimate expression of sovereignty paid in blood so a nation

What really drives me crazy is some parts of the left that treat borders as wishful and not as the ultimate expression of sovereignty paid in blood so a nation can exist. So that is the problem that I have with the illegal-ness of them. The economic benefit or loss is irrelevant. Only invading armies have the "right" to cross a border without permission.