Prime Minister of New Zealand minister of finance became too big; Prime Minister Sir Robert Muldoon was criticised for taking on the finance portfolio during his time in office as it resulted in a large concentration of power in one individual. Before 1987, it was also common for Prime Ministers to take the role of minister of foreign affairs, so they could represent New Zealand on an international stage. More recent Prime Ministers have taken portfolios relevant to their interests, or to promote specific areas they saw as important. For example, David Lange took the education portfolio in his second term; Helen Clark took the
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