+1,000,000
The fact is that the border wall is already approved and congress has simply refused to fund more than a tiny fraction of it.
Even if we could get Mexico to pay, that doesn’t mean the president would have any power to use that money to pay for a border wall. Getting congress to fund a wall is going to take political skill and many allies in congress.
Personally I don’t want even more money collected for anything. I want unconstitutional spending on agencies, subsidies, projects, etc defunded and the money appropriated from the savings to fund real border security.