Summary: Donald Trump is the presumptive GOP nominee for president after a near sweep on Super Tuesday. But Tuesday's results also reflected a deep schism in the party, dividing some lifelong Republicans from Trump's MAGA faction. Two Republicans, former Congressman Denver Riggleman and strategist Barrett Marson, join Laura Barrón-López to discuss. PBS NewsHour is supported by - https://www.pbs.org/newshour/about/funders
