WASHINGTON (AP) — An internal investigation of President Barack Obama's choice to be the No. 2 official at the Homeland Security Department has the potential to become a political headache for former Secretary of State Hillary Rodham Clinton and the Democratic candidate for governor of Virginia.

The director of U.S. Citizenship and Immigration Services, Alejandro Mayorkas, has been named a target in an investigation for his role in helping a company run by Clinton's brother to secure an international investor visa.

Congressional officials briefed on the investigation said the visa was for a Chinese executive. The officials spoke on condition of anonymity because they were not authorized to publicly release details of the inquiry.

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