Yep...America's on the right. Although if Mexico is, this wall will have a useful life of maybe a month. Just divert the Rio Grande into the trench, punch a hole in the cooling lines to make the ice that will seal off the liquid nitrogen, then dig out ice underneath. The wall defeats itself.
Let me guess... America's actually on the right... Glad I'm Canadian!
Darnit! the "C" in Credit was cut out!