Interoffice Memorandum: Fee Waiver Guidelines as Established by the Final Rule of the Immigration and Naturalization Benefit Application and Petition Fee Schedule, Revisions to Adjudicators' Field Manual (AFM) Chapters 10.9(a) (AFM Update AD07-19) [open pdf - 83KB]
"This memorandum provides field offices with guidance for consideration and approval of fee waiver requests conforming to the final fee rule, 'Adjustment of the Immigration and Naturalization Benefit Application and Petition Fee Schedule,' published in the Federal Register (FR) on May 30, 2007. See 72 Fed. Reg. 29851 (May 30, 2007)."
HQ 70/5.5 : AFM Update AD07-19
U.S. Citizenship and Immigration Services: http://www.uscis.gov/