Forget closing the southern border...I say we just nuke Mexico City and be done with it.
???
So, you want to nuke ~9 million native Mexicans in their own country, in their own homes, who are staying in Mexico, working in Mexico and NOT invading the US. Is that what you're saying?
I think you win the No-Wonder-Libs-Think-Conservatives-Are-Nuts award for the day.