H-1B

International students are enrolling in American colleges in huge numbers, boosting the U.S. economy with tuition dollars and diversifying classrooms. But many of those students don't end up staying and working. Critics say that's because the U.S. isn't handing out enough work visas, which sends these talented grads home. 

Growing up in Colombia, Felipe Spinel got a bachelor's degree and then worked for ten years in Bogota's struggling tech sector, saving enough money to study abroad. In 2010, Spinel was accepted into Boston University's two-year MBA program.