1. "Torture works."
Trump is right on that.* Ask ISIS. Torture does work to intimidate and enslave people. It doesn't do much for building a peaceful, happy society though. Trump believes we need to be like ISIS to defeat ISIS.
2. "Because our country is in trouble. We are in danger. We have people who want to do really bad things."
Because others want to do really bad things, we should do really bad things? So we should chop off hands? arms? legs? Gouge out eyes? Or maybe only small things like pulling out fingernails?
If you like the kind of society that ISIS and North Korea builds, Trump is your guy.
Some might say he's only for doing that to people who aren't American citizens. So, it would be constitutional since the Constitution only applies to people residing in the U.S. That wouldn't help with people like the San Bernadino couple, or even the 9/11 killers.
Becoming like bad people in order to defeat them is a perverse form of "If you can't beat them, join them."
As for me, I like the type of society set up by the U.S.Constitution:
Excessive bail shall not be required, nor excessive fines imposed, nor cruel and unusual punishments inflicted. (Amendment VIII)Those who adopted the Constitution were not only against cruel and unusual punishment, but even such small potato things as excessive bail and fines. Those are my kind of guys. Not Trump.
Trump about two weeks ago:
*Torture is effective except if:
a. the person you are torturing is innocent
b. the person you are torturing does not have the information you think he has
c. the person you are torturing believes deeply in his cause (as Christian martyrs have not caved under torture)