E-Verify says Obama not eligible for employment in the United States - Click image to enlarge

CLARIFICATION:
UPDATE:  This information came to me as an email titled

'US GOV'T's eVERIFY Database Says SSN Obama's Using was Never Assigned to Him" The image from The Birther Report had been slightly altered.  The content was the same as the original but the heading had been removed.  Below is the document as it appeared on the original source. 

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E-Verify is an Internet-based system operated by U.S. Citizenship and Immigration Services (USCIS) in partnership with the Social Security Administration (SSA). E-Verify is currently free to employers and is available in all 50 states. E-Verify provides an automated link to federal databases to help employers determine employment eligibility of new hires and the validity of their Social Security numbers.

UPDATE:  Many people have asked how Obama's social security number became public information.

Here is a close up crop of Obama’s Selective Service card.

Self Check is a voluntary, fast, free and simple service that allows you to check your employment eligibility in the United States. If any mismatches are found between the information you provide and your Department of Homeland Security or Social Security Administration records, Self Check will inform you of how to correct those mismatches.
Self Check is a service of E-Verify. Once you have confirmed your employment eligibility using Self Check, you are unlikely to encounter difficulties upon being hired by an E-Verify participating employer.

If you were an employer and entered Barack Hussein Obama’s social security number 042-68-4425 into the data base to verify that he was eligible for employment in the United States you could not legally hire him.

Here is what everify would tell you about hiring Mr. Obama:
From OrlyTaitzESQ.com