Part of Drumpf's neurosis is manifested in his obsession with deportation and immigration and has to be viewed in the context of his own many times over immigrant grandfather being deported.

Drumpf is an immigrant.  I don't think he's ever come to terms with that in light of his white supremacist belief.

There's a contradiction that poses a dilemma for him.   

Of course, that's not the only facet of his neurosis.  He's mad on several levels.