Mexico didn’t pay for it because they like to come into America and make their money by killing Americans with narcotics. Tax cuts weren’t needed between 2016 and 2020, because wages balanced out the previous inflation. The Biden admin is on pace to match Trumps deportation numbers, but is far above the illegal immigration numbers of Trump’s and climbing.
He did… he tried building a wall that Joe stopped construction on immediately after getting into office, he deported immigrants he found crossing illegally, tax cuts weren’t needed because wages were higher to balance out prices.