As Bloomberg roils the race, fellow 2020 Democrats target him in debate
Wednesday night's Las Vegas Democratic debate was the most contentious yet, as candidates who have been facing off for months took on debate newcomer Michael Bloomberg, a billionaire and former mayor of New York. Bloomberg has spent hundreds of millions of his own money on political ads but had yet to defend his policies -- and his record -- against attacks by his opponents. Amna Nawaz reports.
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