Bullshit.
I'll spell it out for you.
There was a majority R's in the house and senate. That's 51% or greater.
The funding requires more than a simple majority. More than 51%. If it only required 51%, the budget would have been done by now and there would be no shutdown.
The same reason the tax reduction was not made permanent. It required 60 votes in the senate and there were only 52 Republicans.
Learn how government works dude. Some votes in the house and senate require more than a simple majority.
But, no worries. Trump will build the wall without the libtards funding.