Regardless of whether you're a YC founder or not, in general unless you're Canadian/Mexican and can qualify for a TN, or Australian and can qualify for an E-3, your only viable real option is an O-1 (Alien of Extraordinary ability). It's not an unachievable visa, and there are many founders who use it, but the requirements to demonstrate extraordinary ability are onerous. From USCIS: * Receipt of nationally or intern…
Not knowing what YC actually does, my first 2 thoughts were: O-1 and J-1 Visas (certainly there could be other solutions) O-1: Typically I would think of athletes/entertainers, in the US for competition/show/tour/etc... It may not apply to some young founder getting into YC who has no other track record of success; however, YC/Tech are politically connected so the mere fact one is accepted into YC, it might = extraor…
J-1 is also quite openly (ab)used to bring employees over who do not qualify for a H1B or O-1.
Only important thing to remember is to pay the J-1 "student" otherwise they are (depending on origin country, but most I think) subject to a rule preventing said person from returning to the US within two years.
I think J-1's are 18 months max. Plenty of time to get a business up and running. By that time if the founder is successful (e.g. take on more investment) they could probably employ themselves with a H1B or E-2 ("investor") visa.
But I'm sure the J-1 has a bunch of issues concerning founding legal entities - this part I have no experience or knowledge of.