Making Age-Verification Technology Uniform, Robust, and Effective Act or the MATURE Act This bill requires social media platforms to verify that individuals who create an account on the platform are at least 16 years old. The verification process must require individuals to submit a copy of their government-issued identification. Social media platforms may not allow individuals under 16 to create an account. Additionally, at least once every six months, the Federal Trade Commission must audit large social media platforms (i.e., platforms that average more than 1 million monthly users or have more than 1 million total accounts) to determine whether each platform is in compliance with the bill's requirements. The bill also provides the commission with enforcement authority.