2008, Natalie Coughlin (BA 2005) became the first American female athlete in modern Olympic history to win six medals in one Olympics. Berkeley alumni—often generous benefactors—have long been among the billionaire ranks, their largess giving rise to many of the campus' eponymous schools, pavilions, centers, institutes, and halls, and with some of the more prominent being J. Paul Getty, Ann Getty, Sanford Diller and Helen Diller, Donald Fisher, Flora Lamson Hewlett, David Schwartz (Bio-Rad) and members of the Haas (Walter A. Haas, Rhoda Haas Goldman, Walter A. Haas Jr., Peter E. Haas, Bob Haas), Hearst, and Bechtel families. There are at least 30 living alumni billionaires: Gordon Moore (Intel founder), James Harris Simons (Renaissance Technologies), Masayoshi Son (SoftBank), Jon Stryker (Stryker Medical Equipment), Eric Schmidt (former Google Chairman) and Wendy Schmidt, Michael Milken, Bassam Alghanim, Kutayba Alghanim, Charles Simonyi (Microsoft), Cher Wang (HTC), Robert Haas (Levi Strauss & Co.), Carlos Rodriguez-Pastor (Interbank, Peru), Fayez Sarofim, Daniel S. Loeb, Paul Merage, David Hindawi, Orion Hindawi, Bill Joy (Sun Microsystems founder), Victor Koo, Tony Xu (DoorDash), Lowell Milken, Nathaniel Simons and Laura Baxter-Simons, Elizabeth Simons and Mark Heising, Oleg Tinkov, Liong Tek Kwee (BS 1968), Liong Seen Kwee (BS 1974) and Alice Schwartz. Controversies Various research ethics, human rights, and animal rights advocates have been in conflict with Berkeley. Native Americans contended with the school over repatriation of remains from the Phoebe A. Hearst Museum of Anthropology. Student activists have urged the university to cut financial ties with Tyson Foods and PepsiCo. Faculty member Ignacio Chapela prominently criticized the university's financial ties to Novartis. PETA has challenged the university's use of animals for research and argued that it may violate the Animal Welfare Act. Cal's seismically unsafe Memorial Stadium reopened September 2012 after a $321 million renovation. The university incurred a controversial $445 million of debt for the stadium and a new $153 million student athletic center, which it financed with the sale of special stadium endowment seats. The roughly $18 million interest-only annual payments on the debt consumes 20 percent of Cal's athletics' budget; principal repayment begins in 2032 and is scheduled to conclude in 2113. On May 1, 2014, Berkeley was named one of fifty-five higher education institutions under investigation by the U.S. Department of Education's Office of Civil Rights "for possible violations of federal law over the handling of sexual violence and harassment complaints" by the White House Task