For those interested in employment immigration litigation, if you are looking for a good citation for the proposition that beneficiaries have a legal interest in the adjudication of their I-140s (not just the employer sponsor), check out Khedkar v. USCIS, 552 F. Supp. 3d 1 (DDC 2021). Sometimes the Government will argue only employers can sue and this case can be used as ammo to rebut that argument.