Hillary, hungry for White House, set to launch Clinton 2.0

Hillary Clinton is expected to finally announce her White House candidacy Sunday, empowering her to parry Republican attacks as she seeks to become the United States' first female president. Seven years after her bitter nomination defeat to Barack Obama, the former secretary of state and one-time first lady would enter the race as the Democratic Party's overwhelming favorite, as Clinton and her rivals gird for a bruising 18-month campaign.