It appears that Bernie Sanders wants Donald Trump to become President of United States by not endorsing Hillary Clinton. He knows he not going to be the nominee and said that he will do his part by making sure the Donald Trump defeated badly, however according to Dr. Allan Lichtman Sanders is insuring the Donald Trump Presidency and is risking all of the accomplishment of President Obama’s.
Currently, the incumbent Democrats are down four to five keys, with an additional two uncertain keys largely under Sanders's control: the internal party contest key and the significant third-party key. If these two keys fall against the Democrats, Trump will be the predicted winner. Even the loss of one additional key will make it more likely for Trump to prevail this fall.
It is not too late for Sanders to reverse course and keep the progressive dream alive. He is vastly closer to Clinton than to Trump on the issues. Sanders and Clinton voted together 93 percent of the time when they were both in the Senate, and Sanders has already gained the insertion of important progressive ideas in the Democratic platform. He didn't get all that he wanted, but after all, Clinton won the majority of delegates (both pledged and super) and the majority popular vote.
thehill.com/...
The good news is their is still time for before the Convention so for the good for Mr.Sanders he must suspend his campaign and endorse Hillary Clinton otherwise he risking destroying all of the Progressive Achievements during the past eights.