-Songwriter also has Austrian citizenship through her late father -Former husband Marc Rich fled the country when indicted on charges of tax evasion - but was pardoned by President Clinton in 2001 -House of Representatives committee later found Denise Rich had swayed the decision through donations to Clinton campaign -Comes as the latest wealthy American to denounce citizenship Denise Rich, the wealthy socialite and former wife of pardoned billionaire trader Marc Rich, has given up her U.S. citizenship - and, with it, much of her U.S. tax bill. Rich, 68, a Grammy-nominated songwriter, top Democratic donor and glamorous figure in...