The U.S Military has made it clear through these boards that the funding for the border wall is already there. . . through the recent defense bill that is the biggest in history. The Army Corps of Engineers gets a big chunk. It even came out in MSM (as a major confirmation) when the admin said he'd have that very same group be in charge of building the wall.
https://www.dailymail.co.uk/news/article-6144837/Trump-says-use-MILITARY-build-wall-Congress-wont-fund-DHS.html
This shutdown is not related to the wall. Whatever it's about is anyone's guess at this point. It's all very quiet.