Rupert and James Murdoch ignored their summons to speak in front of Parliament. (It has worked in the past. I think the last time the police tried to interview Rebekkah Brooks she just didn't bother to show up...and the police went ahead and let it slide). This time Parliament made it clear. Appear as ordered, er, invited, or go to jail.
James did offer to appear...in August, when Parliament is in recess.
This is a great read:
http://www.guardian.co.uk/media/2011/jul/14/phone-hacking-murdoch-parliament-summons"The summons was issued after Rupert Murdoch said he would not give evidence to the committee until after appearing before the public inquiry chaired by Lord Justice Leveson. James Murdoch said he could not appear until 10 or 11 August. Parliament will be in recess then.
Members of the select committee said they would dismiss any attempt by the Murdochs and Brooks not to answer their questions. "None of them has been arrested and sub judice rules do not apply," one MP said.
Tom Watson, a Labour member of the committee who has led the campaign against phone hacking, told Channel 4 News: "We need to know what Rebekah Brooks knew about payments to police. We need to ask James Murdoch how he authorised payments to buy the silence of hacking victims. And from Rupert Murdoch we just need a wider question: why did you let this happen?"