The Democrats are about one thing only, hating Trump. They will never give Trump any victory.
Nothing else matters to them. Not policy, not special interest, not even self-interest.
The government will be shut down through 2021 unless Republicans cave.
One minor tweak to bill renders Dem obstruction meaningless - make it a bill to reimburse the Defense Department for any wall construction costs that occur after Trump invokes its necessity as a national emergency and issues an executive order for the military to build it.