Cohen: Here's why Joe Biden should be the next U.S. president

A year after the election of Donald Trump, a year before the mid-term congressional elections, the presidential campaign of 2020 has begun. This is the way in the United States.
Among Democrats, it is still talk. No one has declared. Among governors, the prospects include Andrew Cuomo and Terry McAuliffe. Among senators, Elizabeth Warren, Kirsten Gillibrand and Bernie Sanders. Maybe Mark Cuban, the billionaire businessman. Or a dark horse.
There is no frontrunner, as Al Gore was in 2000 and Hill