After failing to get their startup Udemy off the ground in their native Turkey, Eren Bali and Oktay Cağlar headed to the U.S. in 2009. Both knew that in the U.S., specifically Silicon Valley, they could gain the support and traction Udemy needed. Yet Udemy was not enough to get them into the country: The U.S. doesn't have a visa specifically for entrepreneurs eager to launch businesses.
Read MoreSource: TechCrunch