Xiaobaitu, I plan to DIY my I-140, Could you give some advices regarding the questions below? Thank you very much !
1) how to "establish that the petitioner will serve the national interest to a substantially greater degree the would an available US worker have the same minimum qualifications" and "waiver of a job offer"?
2) how to present the key point regarding "the exceptional skills which would render the petitioner indispensable to research"
3) how many pages are appropriated for the Petition memo, does 15 pages too much ?