15th July 2011
The BBC News website reports that the investigation follow calls from a senators and a senior Republican.
In an interview with the Wall Street Journal, Mr Murdoch said his company had handled the crisis well
Meanwhile, Mr Murdoch and his son James have agreed to answer UK MPs' questions on the hacking scandal next week.
The Guardian's business correspondant Nils Pratley presents a video looking at the implications of News Corp's decision to drop its plans to take over BSkyB,
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