RICH McKAY and  NATHAN LAYNE IN a fiery eulogy for longtime U.S. Representative John Lewis on Thursday, former President Barack Obama took a series of thinly veiled shots at the actions of his successor that he said tore at the legacy of the Black civil rights icon being laid to rest. The funeral for Lewis, who played an instrumental role in passing the Voting Rights Act of 1965, came on the same day Republican President Donald Trump suggested the Nov. 3 election could be delayed. Trump has also waged a war against mail-in ballots, a tactic critics say is aimed…