It doesn’t really matter if Trump’s Wall is built or not; because, it will be breached and overwhelmed when AGW climate change eventually becomes severe enough to force Latin America to swarm northward. If you doubt this, watch the following videos (especially #6, which I suggest watching first).
1. Haiti and the Dominican Republic ( https://youtu.be/4WvKeYuwifc)
2. The Arctic & Russia (https://youtu.be/Wx_2SVm9Jgo)
3. Japan & North Korea (https://youtu.be/qBfyIQbxXPs)
4. Mexico & Guatemala (https://youtu.be/1xbt0ACMbiA)
5. Nepal & The Himalaya (https://youtu.be/ECch2g1_6PQ)
6. Spain & Morocco (https://youtu.be/LY_Yiu2U2Ts)
“The sixth and last episode deals with a border between Morocco and Spain. In North Africa, on the border of Morocco, there's a Spanish town called Melilla. It's technically Europe... where undocumented migrants and refugees wait in limbo for a chance to scale the supermaxi-fence...”