Former VP Joe Biden told reporters at the Amtrak station in Wilmington, Delaware Thursday that he asked former President Obama not to endorse his campaign for president because "whoever wins this nomination should win it on their own merits." <blockquote>REPORTER: If you're the best choice for the Democrats in 2020, why didn't President Obama endorse you? JOE BIDEN: I asked President Obama not to endorse me. He doesn't want to -- whoever wins this nomination should win it on their own merits. Welcome to Delaware.</blockquote>