Overview: Headlines for February 02, 2016; Iowa Caucuses: Bernie Sanders Rallies to Tie Hillary Clinton; Ted Cruz Upsets Donald Trump; After Dead Heat in Iowa, Will Clinton Move Further Left to Stop the Sanders Surge?; The Road to the White House Begins in Iowa, But Is It Already Sold to Wealthy Donors?; Clinton Laughs Off Question on Goldman Sachs, But Can Millions in Special Interest Cash Be Ignored?