Despite Az being overall a conservative state, Tucson is not. Probably due to it's proximity to the border (about an hour drive). No one I know has ever considered him (McCain) conservative, and most with any leanings to the right here think it is disingenuous he is called a Republican ( don't get me wrong, I think the Republicans serve many of the same masters as Dems, and he is proof of that).
Personally I think this goes deeper than the dems, although they do carry the banner harder for open borders. I believe the deep state (probably ran by those controlling the CIA) are all playing part in making sure drugs get into the country, as well as cheap labor and sex slaves. But if the Republicans had really wanted that wall, it would have been built back when Reagan granted amnesty (or well before that). There is no doubt of that after the suicide pact known as the Hart–Celler Act of 1965.
I have read to many things that suggest Bush and many other Republicans are in this as deep or deeper than Dems. Two sides to the same coin if you ask me. I remain unconvinced Trump is little more than a means to let some of the growing steam out of the pot they have us frogs in. The only reason I still hold out hope is watching how his own party tries to throw him under the bus. But like the right left charade, it could just be another act in their scripted maneuvering.
You're right... this is a Deep State operation... Dems/CIA/RINO's