Trump is the first person to openly challenge (1) our open borders policy, (2) our imperial foreign policy, and (3) the implicit assumption that free trade helps America (or at least that somehow it's not hollowing out thousands of once thriving towns).
The open borders policy has been pushed by an unholy alliance of neo-Marxists like La Raza who want to destroy all borders and certain business interests (like growers) who need labor below minimum wage. But the simple fact is that people who come here illegally are breaking the law. Trump is right when he says either we have a border or we don't.
In foreign policy, I think it's high time we stopped policing places out of some notion that we benefit when we dictate foreign policy and focus on how it directly benefits us.
With respect to free trade, we really have destroyed millions of lives in the process of opening ourselves to free trade. The "giant sucking sound" Ross Perot warned us about has become a roar.
ἡ δὲ κἀκ τριῶν τρυπημάτων ἐργαζομένη ἐνεκάλει τῇ φύσει, δυσφορουμένη, ὅτι δὴ μὴ καὶ τοὺς τιτθοὺς αὐτῇ εὐρύτερον ἢ νῦν εἰσι τρυπώη, ὅπως καὶ ἄλλην ἐνταῦθα μίξιν ἐπιτεχνᾶσθαι δυνατὴ εἴη. – Procopius
Ummaka qinnassa nīk!
*MySmiley*