(CNSNews.com) - Billionaire financier and philanthropist George Soros, who has pledged $15.5 million to liberal interest groups, said Monday he would likely up the ante in his quest to oust President Bush from the White House this November. Speaking before the Carnegie Endowment for International Peace in Washington, D.C., Soros declined to say how much he would give or when he might make the next donation. But he said the attacks he has endured from conservatives -- the Republican National Committee and the Bush campaign are two of his biggest critics -- have fueled his restlessness. "I've been really quite...