Ginnu has provided an excellent link to USCIS Internal Adjudication Manual for Employment-Based Immigration Petitions (http://www.uscis.gov/files/pressrelease/afm_ch22_091206R.pdf) on another subforum, which, although addresses all I-140 petitions, also gives a very detailed review of EB-1 qualifications in 22.2(i)(1). I hope many EB-1 seekers find it helpful! Thanks, Ginnu!