USCIS has revised Form I-912, Request for Fee Waiver, by removing the means-tested benefit criteria. Individuals may still request a fee waiver if their documented annual household income is at or below 150 percent of the Federal Poverty Guidelines or if they demonstrate financial hardship.
Fee waiver applicants must submit the 10/24/19 version of this form starting 12/2/19. After that date, USCIS will reject any Form I-912 with an edition date of 3/13/18, or earlier, a fee waiver request submitted with a letter, or documentation of receipt of means-tested benefit to show eligibility for a fee waiver. USCIS will adjudicate any fee waiver request postmarked before 12/2/19 under the previous policy, AFM 10.9, Waiver of Fees.
Source: AILA Doc. No. 19102531.