For once, Rich Lowry has it right; Donald Trump is, in fact, a right-wing version of Huey Long. The analogy is totally appropriate.
Many years ago, when Trump was running for president for the first time, I argued that his ceiling was Long, and that his floor was George Wallace. Maybe it should have been the other way around.
The principal difference between the two is that Long cared about the plight of poor citizens of Louisiana, and actually made efforts to help them. Trump couldn’t care less about anyone except himself.