>A significant number cross the boarder on foot, as well, and multiple large caravans attempted to do so a couple years ago. It is a dangerous journey, where people are vulnerable to the elements (sometime fatal) and various kinds of abuse on the way, including a large number of unaccompanied minors. Improving border security discourages people from trying in the first place.
That's false. If you look at EU experience from this report:
https://www.tni.org/en/businessbuildingwalls This is also a deadly business. The heavy militarisation of Europe’s borders on land and at sea has led refugees and migrants to follow far more hazardous routes and has trapped others in desperate conditions in neighbouring countries like Libya. Many deaths are not recorded, but those that are tracked in the Mediterranean show that the proportion of those who drown trying to reach Europe continues to increase each year.
