Cynicat
Ctrl+alt+del
We need to prevent what ILLEGAL immigration we can... fences/walls - call it what makes you feel the safest - work! Mexico built a wall - working. Guatemala - working. Other countries too! We will always have illegal immigration but it's out of control right now! Sanctuary cities are absolutely unlawful. We are one country formed by states, not an empire with city-states. .-.
Do your research dude, a wall isn't going to help at all. Between 40 and 72 % of undocumented immigrants in America came there with PLANES. guess what? A wall doesn't stop planes!
Also your wall will just prevent people to go back. Ever heard circular flow? Immigrants work there for a bit then go back to their own country. Making it harder to cross the border actually decreased America's immigration problem. This wall won't stop people from coming in, it will just stop people from going back.
Just a few reasons why it won't work let alone how expensive it would be...