After weeks—years, really, but lately more urgent—of debate over the Trump administration's proposed wall at the US-Mexico border, Congress will vote on a spending bill Thursday that includes $1.375 billion for 55 miles of border fence construction. President Donald Trump has long sought $5.7 billion for a more comprehensive concrete or steel structure spanning the 2,000 mile border, but has not managed to garner much political support. Rightly.