Trump and his deals have nothing to do with the Constitution. Cruz is the most consistently constitutionalist candidate in the field.
Donald’s disregard for the Constitution almost matches 0bama’s. Proof of that is that while The Don says he’ll scarp all of 0bama’s executive orders (another promise he stole from Cruz), he then says “I’ll do good ones.” IOW, he’ll continue and extend the government by pen and phone that we all oppose, which shows he doesn’t understand the constitutional structure.
There will be similarities. Trump won't like dealing with Congress or the people either. He will use authoritarian measures to achieve his goals... whatever they are.
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Being a conservative purist in ideology does not make you competent. How many payrolls has Cruz met? What does he know about being an executive? As a govt employee for life, what does Cruz know of limited govt and the private sector for real?
The answer to that is to elect Congress men (and women) who DO!
Have any in mind?