Democratic presidential contender Barack Obama's name came up again at the Antoin "Tony" Rezko corruption trial and in a way that earlier filings in the case did not telegraph. Stuart Levine, the prosecution's star witness, said he and Obama were at a party Rezko threw at his Wilmette mansion on April 3, 2004, for Nadhmi Auchi, a controversial Iraqi-born billionaire who Rezko was trying to get to invest in a South Loop real-estate development. Auchi, now a citizen of the United Kingdom, has faced criminal charges in Europe. He also figured in the revocation of Rezko's bond early this year...