Republican Senator Chuck Hagel of Nebraska will join Barack Obama on his upcoming trip to Iraq, The Wall Street Journal reports. According to CBS News' Maria Gavrilovic, the Obama campaign will not comment on the paper's report but did not deny its validity. Hagel, a vocal critic of the Bush administration's handling of the Iraq war, has been mentioned as a possible vice presidential pick for Obama and has said that he would consider an offer from the presumptive Democratic nominee. The Nebraska senator is currently ranked #4 on the CBSNews.com Democratic VP hot sheet. ...