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USCIS’s Lockbox provides filing tips for Forms N-600, N-600K, and N-336, to help stakeholders ensure that applications are properly accepted at the Lockbox facility.

Release Date 

01/03/2023

WASHINGTON—Today, U.S. Citizenship and Immigration Services (USCIS) published a Notice of Proposed Rulemaking (NPRM) to adjust certain immigration and naturalization benefit request fees. The new fees would allow USCIS to more fully recover its operating costs, reestablish and maintain timely case processing, and prevent the accumulation of future case backlogs. USCIS receives approximately 96 percent of its funding from filing fees, not from congressional appropriations.