A green card can be used to prove employment eligibility in the United States when completing the Form I-9, employment eligibility Verification.

在填写l - 9就业资格认证表格后，绿卡能用于证明在美国的就业资格。

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CLARA: you haven't handed in your new I-9 form yet.

克拉拉：你还没交新的I - 9表呢。

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"He did not obtain the required Form I-9, Employment Eligibility Verification, from these persons at the time they were hired to verify their legal work status, " the Finance Committee's report says.

FORBES: The New President

In 1986, Congress asked for a small privacy concession from Americans: just fill out the I-9 form and hand over copies of personal identification.

FORBES: E-Verify: Immigration Reform's Threat To Legal Workers