Tim Geithner, President Obama's nominee to head the Treasury Department, apologized to the Senate Finance Committee for skipping $34,000 in taxes from 2001 to 2004. "These were careless mistakes. They were avoidable mistakes. But they were unintentional," he said. "I should have been more careful." Geithner has since paid what he owed and still has bipartisan support. "To some, he is not only the best choice, he is the only choice," said Sen. Charles Grassley, the committee's senior Republican.