I am currently pending I-485 (EB3, skilled worker employment based, priority date Oct 2008) since April 2014. I submitted inquiries through congressman, they received a letter that my case is on hold indefinitely. Do you recommend filing Writ of Mandamus or would that cause a denial? What other actions can I take, I've submitted a case through the Ombudsman and met with a USCIS officer through Infopass appointment (who told me nothing). No RFEs have been issued for this case, I-140 was approved and fingerprinting done (twice, since first set expired).
See clip from Attorney Rajiv S. Khanna's conference call video that addresses this question.
https://youtu.be/F0YZD8zWm88?t=333
FAQ Transcript:
Writ is simply order of the court or a formal order.
Mr. Rajiv Khanna, Mr. Kunal Sharma and the rest of the team have been very patient and extremely supportive.
I had filed for my immigrant visa through my spouse, and it was quite complicated. Couple of the other lawyers we spoke to said that there are no chances in winning this case, but Mr Khanna was firm, that the fundamentals are right and thus we have a good chance. Finally, after 2 long years, my immigrant visa has been approved.
What impressed me the most is the Mr. Khanna would immediately schedule an appointment (no charge, of course) every time there was some news from the immigration office or from my side. Even during the final stages, I had asked him a few questions regarding my DS-260 as i was very nervous, he scheduled an appointment immediately and told me exactly what to answer in each question. They made me feel as if I was their only customer. Excellent effort and care for each case by the team, and I would surely refer his firm to everyone.