nominee Edwin Meese in the aftermath of criticism leveled at Meese's finances and said that he faced similar trials in the confirmation of nominees during his own presidency. Ford also stated, "I think there have been more individuals than I would have liked who have been careless in how they handled certain activities. I don't think anything criminal has been done, but there has been a degree of carelessness which I don't think should be condoned." On June 22, 1985, Ford was among four former western heads of state to voice support for President Reagan's decision to not comply with terrorists in Beirut that were holding American hostages. In an August 6, 1987 interview with David Frost, Ford stated that the Iran-Contra Affair was not as serious as Watergate but that he would not have swapped arms for hostages and overruled his Secretaries of State and Defense. Bill Clinton In August 1993, Ford joined President Clinton for golf in Vail, Colorado, Ford telling reporters that he shared similar views with the incumbent president on the North American Free Trade Agreement and would assist in any way he could in securing its passage. On September 14, Ford attended a White House ceremony to promote the North American Free Trade Agreement and warned that not passing NAFTA would guarantee a wave of illegal immigration into the United States: "If you defeat Nafta, you have to share the responsibility for increased immigration to the United States, where they want jobs that are presently being held by Americans." After the impeachment of Bill Clinton, Ford and Carter wrote an op-ed for the New York Times calling on the president to be censured in a bipartisan resolution. In April 1999, Ford stated that President Clinton had made mistakes in his response to Kosovo, faulting Clinton for having an only military air campaign and not foreseeing the event. In May 2000, Ford made a joint appearance with Carter and Clinton for support of the Clinton administration's trade deal with China. Health problems In February 1983, Ford underwent arthroscopic surgery at the Eisenhower Medical Center for the treatment of a football injury. In June 1983, Ford underwent elective urologic surgery at Eisenhower Medical Center. On April 4, 1990, Ford was admitted to Eisenhower Medical Center for surgery to replace his left knee, orthopedic surgeon Dr. Robert Murphy saying "Ford's entire left knee was replaced with an artificial