globe. Combating the persistence of slow growth must be a priority for the new American president and other leaders of the developed nations. As he ponders remedies, President Clinton starts from a shaky base. The U.S. economy he inherits experienced the slowest growth of the postwar period -- an average of 1.2 percent per year over the last four years. The economy began to recover from recession in mid-1991, but so slowly that most voters felt the recession was still on and rejected President Bush's bid for a second term. Governor Clinton's campaign was built on his pledge to "get the economy moving again, "a theme borrowed from the 1960 campaign of John F. Kennedy. But the 1990s are not the 1960s; despite somewhat faster growth in the latter part of 1992, the U.S. economy is still hampered by deep structural problems and a global recession. America's role in the new world economy has changed. Though still the largest national