Presidency of Jimmy Carter a party platform calling for the establishment of a national health insurance program, Kennedy refused to concede. He instead called for an "open convention", in which delegates would be free to vote for the candidate of their choice regardless of the result in the primaries. Carter's allies defeated Kennedy's maneuverings at the 1980 Democratic National Convention, and Carter and Vice President Mondale won re-nomination. Despite Kennedy's defeat, he had mobilized the liberal wing of the Democratic Party, which would give Carter only weak support in the general election. The 1980 Republican presidential primaries quickly developed into a two-man contest between
Jimmy Carter the US and Korea as well as Carter's interest in preserving his policy of worldwide tension reduction. On April 21, 1978, Carter announced a reduction in American troops in South Korea scheduled to be released by the end of the year by two-thirds, citing a lack of action by Congress in regards to a compensatory aid package for the Seoul Government. Carter made twelve international trips to twenty-five countries during his presidency. Carter was the first president to make a state visit to Sub-Saharan Africa when he went to Nigeria in 1978. His travel also included trips to Europe, Asia,