Australia\'s foreign minister says American authorities tried to confiscate his supply of Vegemite as he entered the US.It is the second time this year that Australia\'s signature yeast extract spread has sparked top-level - if joking - diplomatic disagreement. Kevin Rudd tweeted that airport authorities in New York had questioned bringing in Vegemite. Mr Rudd said he \"needed foreign ministerial intervention\" to keep the popular Australian spread that is widely known as an acquired taste. Vegemite also was a source of disagreement when prime minister Julia Gillard visited the US in March. President Barack Obama joked about Vegemite, saying: \"It\'s horrible.\" Ms Gillard acknowledged their opinions represented a \"little bit of division\".