The socialite, songwriter and wife of pardoned billionaire Marc Rich moved to London and gave up her U.S. citizenship. On his last day in office, President Bill Clinton pardoned Marc Rich after his conviction on charges that he evaded paying nearly $50 million in income tax. The pardon became controversial and the subject of a congressional hearing when it was learned that Denise had contributed over $1 million to the Democratic Party and the Clinton Presidential Center. Giving up her privileges as a U.S. citizen saved her tens of millions of dollars, according to a Reuters story.