Clinton breaks Obama's winning streak Hillary Clinton's victories in the key states of Ohio and Texas mean the fight for the Democratic nomination will continue. Meanwhile, John McCain earned enough delegates to clinch the Republican nomination. Midday looks at the results of the presidential primaries and what they mean for the rest of the 2008 presidential race.11:00 a.m.
Thomas Horner: Co-founder and principal of Himle Horner, a public relations and crisis management firm.
A new era in Cuba? A new documentary from America Abroad, "Viva la Evolucion: Cuba After Fidel," examines what the recent change in leadership will mean for the people of Cuba and the U.S.-Cuba relationship.12:00 p.m.