01/11/2009 05:12 am ET | Updated May 25, 2011

Illegal Immigrants Worked In Immigration Chief's Home

Every few weeks for nearly four years, the Secret Service screened the IDs of employees for a Maryland cleaning company before they entered the house of Homeland Security Secretary Michael Chertoff, the nation's top immigration official.

The company's owner says the workers sailed through the checks -- although some of them turned out to be illegal immigrants.

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