Which route to reform? Migration at core of Kamala Harris' Central America tour

First Guatemala, then Mexico. It's a tough maiden foreign assignment for the new US Vice President. Kamala Harris is on a mission to broach the root causes of why undocumented migrants risk it all to head north. How much pressure can Washington apply when her hosts squander or steal the aid that's meant to offer an alternative? It's not all about lofty development goals.