Trump 'sees a foil' in the 4 Democratic congresswomen, says 'American Carnage' author Tim Alberta

As uproar continues over tweets President Donald Trump launched on Sunday targeted at four congresswomen of color in which he told them to "go back" to where they came from, Tim Alberta -- the chief political correspondent for POLITICO Magazine and author of the new book, 'American Carnage: On the Front Lines of the Republican Civil War and the Rise of President Trump' -- says Trump's attacks might be part of a wider 2020 strategy in which he sees a foil in these four Democratic congresswomen.

"Trump really thrives off of having a political foil, and he looks at these four Democratic freshmen progressive congresswomen and he sees a foil," Alberta told ABC News Political Director Rick Klein on the 'Powerhouse Politics' podcast on Wednesday. "He would love to paint the entire Democratic Party with the broad brush of these women -- a couple of whom have obviously said really controversial things that are very polarizing figures even on the left."