WASHINGTON (AP) — One of Vice President Joe Biden's most vocal supporters joined the super PAC urging him to run for president Monday, as interest in Biden's political future spiked amid fresh signs that his aides are looking closely at a 2016 campaign. Dick Harpootlian, the former chairman of the South Carolina Democratic Party, said he was writing a $10,000 check to the group Draft Biden, and was prepared to donate another $10,000 of his personal funds if asked.