1. Will eastern Ukraine go the way of Crimea? Chris Hayes is joined by NPR International Correspondent, Ari Shapiro, and Connecticut Senator Chris Murphy.
2. MSNBC reports: "More trouble may be on the horizon for New Jersey Gov. Chris Christie, as the office of Manhattan District Attorney Cyrus Vance is now reportedly investigating the relationship between the Republican and the Port Authority of New York and New Jersey." New Jersey Assemblyman John Wisniewski joins Chris Hayes to explain.
3. Why is Fox News so vehemently fighting against the legalization of marijuana? Public opinion - even among young Republicans - is shifting towards embracing legalization. Author of The Last Pirate: A Father, His Son, & the Golden Age of Marijuana, Tony Dokoupil, joins Chris Hayes to discuss the losing battle.
4. Is the U.S. officially an Oligarchy? Political Consultant, Tara Dowdell, Associate Professor at Columbia University, Dorian Warren, and MSNBC Contributor, Josh Barro join All In to discuss..