The U.S. Citizenship and Immigration Services (USCIS) is reinstating neighborhood investigations for naturalization applicants. This practice involves visiting residences and workplaces to interview neighbors and employers, aiming to verify an applicant's eligibility and character. Previously, USCIS relied more on biometric and FBI checks, but this renewed focus on personal investigations seeks to ensure all statutory requirements for citizenship are fully met and protect the integrity of the naturalization process.