Ratings company Moody's on Tuesday slashed Puerto Rico's debt rating by three notches into even deeper junk status after the US territory passed a debt-restructuring law. Moody's Investors Service cut the rating to "B2" from "Ba2" and said the outlook was negative, indicating further downgrades were possible. Now dubbed the "Greece of the Caribbean," the archipelago is, like Greece, reeling under massive debt. Over the past decade, the commonwealth's debt has doubled to nearly $70 billion and investors are growing increasingly worried the government is running out of cash. In a bid for debt relief, the Puerto Rican authorities recently...