When should I file a writ of mandamus in my EB-5 case?

In my opinion, four and a half years to adjudicate an I-526 is unreasonable delay and Judges are agreeing with us. Very sad we have had to file mandamus actions to get adjudication.

I think you are more than ready for one.

There is no reason to wait - file now. You should secure counsel, however, to ensure that the matter is properly litigated.

Consider filing for naturalization if you are eligible already. This may help force USCIS to consolidate cases and adjudicate your pending I-829 in order to adjudicate N-400. We have helped clients get approvals on long pending I-829s this way and avoid federal litigation. Hire an experienced immigration lawyer to assess your eligibility before filing N-400.

Check with UCSIS first and send an email to the investor section. If filing mandamus, you would like to be able to tell the court the efforts you have made directly to get this resolved with USCIS.

You should exhaust your remedies with the agency before you resort to a lawsuit. I suggest you reach out to them for an update, see if they will let you make an appointment to go in to speak to someone first.