On June 4, 2008, Obama named Kennedy, along with Jim Johnson and Eric Holder, to co-chair his Vice Presidential Search Committee. (Johnson withdrew one week later.) Filmmaker Michael Moore called on Kennedy to "Pull a Cheney", and name herself as Obama's vice presidential running mate (Dick Cheney headed George W. Bush's vice presidential vetting committee in 2000—Cheney himself was chosen for the job). On August 23, Obama announced that Senator Joe Biden of Delaware would be his running mate. Kennedy addressed the 2008 Democratic National Convention in Denver, introducing a tribute film about her uncle, Senator Ted Kennedy. The Topps trading card company memorialized Caroline Kennedy's involvement in the campaign by featuring her on a card in a set commemorating Obama's road to the White House.