2. Materials have already been purchased, incl. 270,000 tons of steel. 3. More costs incurred for restoration, such as filling in trenches already dug. The construction of a big, beautiful wall on the southern border was the primary policy proposal of Donald Trumps 2016 presidential campaign. Joe Biden has vowed to halt construction of new border walling as a political slight against Trump, making the promise to pro-illegal immigration lobby groups. Immigration was largely ignored as a political topic of the 2020 election, with mainstream media debate moderators instead focusing topics of conversation on race riots in major US cities. Biden also will face demands for cheap illegal immigrant labor from business lobby organizations, many of which supported his presidential campaign. Hes declined to commit to actually tearing down wall to open up the borders, although some in his progressive constituency have demanded it.