USCIS Policy Memorandum: Fee Waiver Guidelines as Established by the Final Rule of the USCIS Fee Schedule (March 13, 2011) [pdf]
This Policy Memorandum (PM) provides guidance on processing fee waiver requests filed pursuant to 8 CFR 103.7(c) as amended by changes made in the final rule “U.S. Citizenship and Immigration Services Fee Schedule,” published in the Federal Register (FR) on September 24, 2010. See 75 FR 58961. The document specifically reviews the I-912 Form which is USCIS’ fee waiver form.