He’s already engineered a huge drop by using Mexico essentially as the wall and some parts of the wall already built doing their job.
Via Daily Caller:
The Trump administration is shifting its border wall focus from procuring resources to breaking ground on new construction after securing funds for 1,000 miles of new wall along the southern border, White House officials tell the Daily Caller.
The fiscal year 2021 budget requests fewer funds for border wall construction than in previous years, but a senior White House official explained how the administration has “now shifted from securing funds to being able to build more wall.”