Bush Heads South of the Border, Rhetoric Turns Left

President Bush is visiting Brazil, Uruguay, Colombia, Guatemala and Mexico this week, carrying with him a complicated economic and trade agenda. But after keeping Latin American issues on the backburner for six years, can he effectively compete with rising radical leaders like Hugo Chavez?  Plus, House Democrats unveil their plan for a withdrawal from Iraq. On Reporter's Notebook, will President Bush grant Lewis Libby a pardon? Marc Cooper guest hosts.