Former US president George W Bush has cancelled plans to attend an education discussion in Denver, citing an invitation to WikiLeaks founder Julian Assange to the same event.
Mr Bush was to attend the event on Saturday, but his spokesman, David Sherzer, said that he did not want to share a forum with someone who has “wilfully and repeatedly done great harm to the interests of the US”.
Mr Assange is in Britain, fighting extradition to Sweden as part of a sex crimes inquiry.
He is free on bail, but it was not immediately clear if he ever planned to be in Denver.
WikiLeaks has released tens of thousands of secret US government and military documents.