REPORTER: "Did you offer to President Trump your Nobel Peace Prize?" MARÍA CORINA MACHADO: "I presented the President of the United States the medal...the Nobel Peace Prize." "Two hundred years ago, General Lafayette gave Simón Bolívar a medal with George Washington's face on it...[he] kept that medal for the rest of his life." "Two hundred years in history, the people of Bolívar are giving back to the heir of Washington a medal, in this case the medal of the Nobel Peace Prize, as a recognition

In 1823, President James Monroe called for European powers to stay out of the Americas. What came to be known as the Monroe Doctrine would influence U.S. foreign policy for generations, and lead to military interventions across the Western Hemisphere. This past week, President Trump repeatedly invoked the Doctrine when discussing last week's incursion into Venezuela. Mo Rocca talks with historian Jay Sexton, author of "The Monroe Doctrine: Empire and Nation in Nineteenth-Century America," about