The Trump administration this week cheered a new House bill to spend $5 billion on a Southern border wall, but its passage is highly unlikely because Senate Republicans are already prepared to cut that number by more than two-thirds.

The fiscal year 2019 House Homeland Security Appropriations spending bill would give a major boost to border wall funding. Beyond the billions of dollars in funding for 200 miles of “new physical barrier construction” along the U.S.-Mexico border, it would also provide funding for improvements aimed at achieving “100 percent scanning” of the border within five years.