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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.

WASHINGTON - U.S. Citizenship and Immigration Services (USCIS) released a revised Form N-648, Medical Certification for Disability Exceptions, for individuals with disabilities who are seeking exceptions from the English and civics requirements for naturalization.