US President Donald Trump is attacking some of the top Democrats who may challenge him in the 2020 presidential election, in which he hopes to secure his second round of presidency.
Trump was in Johnson City, Tennessee, on Monday to whip up support for Republican Representative Marsha Blackburn ahead of the November midterm elections.
The New York billionaire took the chance to attack Democratic Senators Elizabeth Warren and Cory Booker, as well as former Vice President Joe Biden by name.

Apparently referencing Booker’s groping of a classmate in high school, Trump said: “See some of the things he wrote when he was young about women.”
He further mocked Warren, asserting that Democrats “have moved so far left that…
