Michael Bloomberg's latest presidential campaign ad features footage of several former presidents and the current occupant of the Oval Office, but it does not show the man paying for the ad. Bloomberg's new "Bring Presidential Back" spot compares some of President Trump's more vulgar moments to soaring speeches from John F. Kennedy, Lyndon Johnson, Ronald Reagan, George W. Bush, and Barack Obama.> Our country has a rich history of presidents who respected the power, decorum, and influence of their office.> > Unfortunately, that rich history ended the day Trump became president. pic.twitter.com/3QEncsTiNA> > — Mike Bloomberg (@MikeBloomberg) February 9, 2020To …