To be honest, sure a wall can block people specifically the drug dealers but other than that I think the wall is useless and is just a waste of money. People will end up climbing over it anyway. And just the immigration system itself is messed up with how long it gets to a visa or finalizing paper work just to become a citizen, and this goes for pretty much every country. I think an open border system should be adopted and regulation of people coming in and out of the country should be regulated.
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