1. Your startup would have to have raised $345k from 'qualified investors' or $100k from federal/state grants (difficult for bootstrappers to leverage this)
2. Should have created 10 jobs for Americans in 2 years
3. This parole will be granted for 2 years, and then extended by another 3, but after that there's no provision to let founders stay.
4. You need to have at least 15% stake in your company (which can be easy initially but could get diluted going ahead, specially with multiple founders)
[1] https://news.ycombinator.com/item?id=12624180
(edit: formatting)