Witcover: Progressives target Biden record, defense of Obamacare
Jules Witcover: Democratic progressives are intensifying attacks against former Vice President Joe Biden, concerned he will thwart the party's swing to the ideological left.
Witcover: Democrats need broader mission than just beating Trump
The Democrats, in concentrating now on who should lead them in 2020, may risk hampering their first imperative task for the country's sake, of seeing that it won't be Donald Trump for another four years.
