(CNN) Eight days after igniting a national firestorm by sending a series of racist tweets urging four Democratic congresswomen of color to "go back" where they came from, President Donald Trump was at it again. Here's what he tweeted at "The Squad" -- aka Reps. Alexandria Ocasio-Cortez (New York), Ayanna Pressley (Massachusetts), Ilhan Omar (Minnesota) and Rashida Tlaib (Michigan) -- on Monday:

"The 'Squad' is a very Racist group of troublemakers who are young, inexperienced, and not very smart. They are pulling the once great Democrat Party far left, and were against humanitarian aid at the Border...And are now against ICE and Homeland Security. So bad for our Country!"

I want to hone in on one aspect of that tweet -- where the President of the United States says that the members of "The Squad" are "not very smart."

On what, you might ask, is Trump basing that conclusion about the intellectual capacity of these four female progressive Democratic members of Congress?

After all, it's hard to imagine that Trump suddenly gained access to IQ tests for the four. Or that Ocasio-Cortez's double major in international relations and economics at Boston University or Tlaib's law degree from Western Michigan University were evidence that they weren't smart. Omar graduated from North Dakota State University. And Pressley went to Boston University for two years before she dropped out to help her out-of-work mother

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