US PRESIDENT Barack Obama is under pressure from colleagues in his own party to ditch the revised trip to Australia, Indonesia and Guam because they fear it will torpedo their landmark healthcare bill. After eight months of struggle, Mr Obama and backers in his Democratic Party are battling to gain enough support to pass the healthcare legislation. Friday is viewed as a crucial deadline, but with 26 House Democrats still wavering on the reform there is talk a final vote may not take place until early April. Mr Obama summoned some of the wavering lawmakers to the White House yesterday...