File Form I-90 for renewing your green card online in US.

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Under U.S. Immigration Law, Lawful Permanent Residents must carry their Green Card at all times. Lawful Permanent Residents who cannot produce their Green Card as evidence of status may have difficulty establishing authorization to work, travel or apply for financial services or government benefits. Therefore, if your Green Card is lost or stolen, it is important to replace it right away.You can make use of the option of renewing your green card online.

If the cardholder has reached his or her 14th birthday, child cardholders must undergo registration and fingerprinting within 30 days after their 14th birthday.Then they are reissued new green cards with new information.