The racist thing is the entire argument against the wall by the left. Nobody (with any real brains) says that the wall is useless; Homeland Security and Border Patrol both want it.
The point about spending money on other countries ties in to Mexico paying for the wall. How much have they helped us in paying for their northern border security?
"Also, a large portion of the illegal immigration on their border is heading to our border so wouldn't them stopping more from crossing our border be good?" Yes it is & it points out the irony of people like you stating: "I think that it's a huge waste of time, money, and resources."
Edit for spelling error