He carries out (most of) his promises no matter how idiotic they are. (Note he hasn’t moved the embassy, probably not to upset his buddies in Saudi Arabia).
He’s building a wall despite all the evidence that it’s unnecessary and wasteful and will be ineffective. Texans living near the current Bush-era border fence hate it. If you google “Texas border residents bristle at Donald Trump’s talk of new wall,” you’ll find a USA Today article with a great photo of the 19′ ladders that have been used to scale the 18′ fence. The number of illegals in the U.S. has remained stable for several years. The number of illegal crossings of the Mexican border dropped 90% from 2005 to 2015. It’s much easier to enter the U.S. legally on a tourist visa and overstay the visa, as over 40% of illegals have done.