My guess is this. If the Republicans come up with a DACA(amnesety) bill with no wall then Trump will sign it. This is how I judge the situation objectively. I could be wrong, I want to be wrong. I will gladly be wrong.
Also, since the base in this scenario gets royally butt f***ed, the RINOs will throw the base a crumb like a 1% marginal rate decrease and 100 miles of chained linked fence on the NM border..
He will deliver as promised.