“First, the "national interest waiver" provided in section 203(b)(2)(B) of
the Immigration and Nationality Act (INA) permits certain non-citizens with
advanced degrees or exceptional ability to seek green cards without employer
sponsorship if their admission is in the national interest. 5 This waiver
is underutilized and there is limited guidance with respect to its
invocation. I hereby direct USCIS to issue guidance or regulations to
clarify the standard by which a national interest waiver can be granted,
with the aim of promoting its greater use for the benefit of the U.S economy
. ” http://www.aila.org/content/default.aspx?docid=50784