回複：回複：Please help: OR petition received RFE for Offer Lett

Please see below:

Please submit an offer letter of employment in the form of a letter from:

1. A United States university or institution of higher learning offering the alien a tenured or tenured-track teaching position in the alien's academic field.
Or
2. A United States university or institution of higher learning offering the alien a permanent research postion position in the alien's academic field.
Or
3. A department, division, or institute of a private or non-profit employer offering the alien a permanent research position in the alien's academic field. The department, division, or institute must demonstrate that it employs at least three persons full-time in research positions, and that it has achieved documented accomplishments in an academic field.

That's all.