Former President Barack Obama hasn’t endorsed Vice President Kamala Harris for the Democratic nomination this year because he believes she has long odds to win. That’s according to the New York Post, which cited a source close to the family of President Joe Biden, who dropped out of the race over the weekend. “Obama’s very upset because he knows she can’t win,” the Biden family source told the Post. Want more breaking political news? Click for the latest headlines at Raw Story. The source added: “Obama knows she’s just incompetent — the border czar who never visited the border, saying that all…