US agriculture chief in Cuba as ties warm

The United States' agriculture secretary was in Cuba on Wednesday to speed up efforts at normalizing trade ties after decades of enmity between the old Cold War foes. The neighbors agreed to right relations in December after more than 50 years of highly tense ties including the Cuban Missile Crisis, which brought the world to the brink of nuclear war. Tom Vilsack is the third member of President Barack Obama's cabinet to visit after Secretary of State John Kerry and Commerce Secretary Penny Prit