Wall is part of the upcoming DACA deal. No wall? No DACA. Nice and simple. Oh yeah, no chain, and no lottery either. Still pretty simple.
The administration hopes to build 60 miles of new steel bollard fencing along the border with 2018 funding and an additional 64 miles with 2019 funding.
https://www.reuters.com/article/us-usa-budget-wall/trump-budget-to-include-3-billion-for-border-wall-official-idUSKBN1FT09M
So President Trump is requesting 7% of the complete wall in this two year budget deal. A complete wall of the entire border would be 1,827 miles long.