International students and postdocs on F and J visas face a difficult challenge. Those visas were designed to discourage working on the side - study and research were supposed to be the main goal. But now, entrepreneurialism has become an integral part of university education. There are classes where the students learn to create a product or set up a company, numerous sources of funding to work for startups or develop an idea, and many opportunities to get involved with new businesses run by faculty, researchers and alumni (or at accelerator/incubator spaces on campus). This presentation focuses on what can be done on an F or J visa, how to plan ahead for maximum flexibility, and what other types of visa statuses may be possible. We will and have time for some Q & A.