US and Canada have friendly joint operations to surveillance their mutual border.
You can't just walk across without passing through customs.
They will send police after you if you cross outside a customs checkpoint.
------
Other countries require a Visa to even enter, EU, India, Korea just to name a few.
If the police know you don't have a visa you can end up in their jail or prison.
My point is, a physical barrier is not the only form of border security.
e- I voted, Let in some people with selective criteria, btw
background check is a good start, are they who they say they are. are they a productive member of their country.
This post was edited by Mondain on Jun 23 2023 01:58am