Helen Clark governing coalition, and Clark was sworn in as Prime Minister on 5 December 1999. Clark led the Fifth Labour Government, which implemented several major economic initiatives including Kiwibank, the New Zealand Superannuation Fund, the New Zealand Emissions Trading Scheme and KiwiSaver. Her government also introduced the Foreshore and Seabed Act 2004, which caused major controversy. In foreign affairs, Clark sent troops to the Afghanistan War, but did not contribute combat troops to the Iraq War. She advocated a number of free-trade agreements with major trading partners, including becoming the first developed nation to sign such an agreement with China, and
Helen Clark visit she met Queen Elizabeth, Prince Charles and British Prime Minister Tony Blair. Clark's major overseas visit of her third term was a trip to the United States in March 2007, where she met with George W. Bush in Washington. Despite her strained relationship with the President, they agreed on many issues, including working cooperatively in foreign affairs, commerce and the need for both nations to work toward energy security. On 8 February 2008, Clark became the longest-serving leader of the Labour Party in its history (although some uncertainty exists over the exact date when Harry Holland became the first