Former President Barack Obama on Tuesday endorsed his vice president Joe Biden's bid for the White House, with all of Biden's key rivals having dropped out of the Democratic presidential nomination race."Choosing Joe to be my vice president was one of the best decisions I ever made...And I believe Joe has all the qualities we need in a president right now," the 58-year-old Obama, who remains the party's most popular figure, said in a 12-minute video message.Obama portrayed the 77-year-old Biden as a trusted and experienced politician who is fit to steer the country especially during the cor…READ FULL ARTICLE