The first two categories require a job offer. The third is for people who are so freakin' awesome that their mere presence will make the US a better place. "Na

The first two categories require a job offer. The third is for people who are so freakin' awesome that their mere presence will make the US a better place. "National Interest Waiver - Aliens seeking a national interest waiver are requesting that the Labor Certification be waived because it is in the interest of the United States. [...] Those seeking a national interest waiver may self-petition (they do not need an employer to sponsor them)" http://www.uscis.gov/portal/site/uscis/menuitem.eb1d4c2a3e5b9ac89243c6a7543f6d1a/?vgnextoid=816a83453d4a3210VgnVCM100000b92ca60aRCRD&vgnextchannel=816a83453d4a3210VgnVCM100000b92ca60aRCRD http://www.uscis.gov/portal/site/uscis/menuitem.eb1d4c2a3e5b... So, it is employment based, but without any sponsorship required from a particular employer. You're self-certifying that you're really really really good at what you do, and what you can offer to the US will benefit the US as a whole. They will, of course, want lots of evidence to support the above. The upside to this route is that you're not tied to a particular employer.