Michael Bloomberg opens door to 2020 Democratic run for president2Photo© firstpost.com

Michael Bloomberg opens door to 2020 Democratic run for president

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US President Donald Trump mocked "little" billionaire and former New York mayor Michael Bloomberg on Friday, saying his potential opponent for the 2020 election would fail if he joined the race.

"He doesn't have the magic to do well... Little Michael will fail," Trump told reporters at the White House as he headed to the southern state of Georgia to rally support.

Bloomberg, 77, is expected to enter the race Friday to become the Democratic nominee for US president, setting up a showdown with fellow septuagenarian Joe Biden as the leading centrist candidate.