There’s a number of reasons, in no particular order.
Firstly, Bush prefers to engage in interviews and public appearances if they are scripted – otherwise his garbled and confused efforts lead more easily to problems.
Secondly, the BBC leads the pack of hounds sniffing at British government claims and ferreting out the facts; there is nothing even remotely comparable in the US, and the deplorable standards of news media in America rule out many serious media efforts to expose and communicate facts.
Thirdly, there may be something rotten in the state of US media – or perhaps (more to the point) with the consumer eyeballs that watch US media. In 2002, FOX News overtook CNN and became the top-rated cable news network in the US, which I consider nothing less than a major tragedy. Of all the big media heads, Murdoch, Bush’s friend and ally, is probably the least reputable and most suspiscious: he is well known for his lack of professional objectivity and his desire to shape the editorial policies of the media he owns; this is most obvious in FOX news, which is a jumble of jingoistic propaganda that no person endowed with basic education could take seriously.
However FOX is certainly not the only offender here, just one of many, and an obvious pattern can be gleaned from Murdoch’s various media where the war in Iraq is concerned. The main exceptions in Murdoch’s stable are the Times and the Sunday Times: when Murdoch acquired these British publications, he was forced to sign agreements that limit his highly unethical and intrusive behaviour (he is not permitted to appoint editors to the papers, and he is barred from dictating editorials and editorial policy, though he has some latitude left to play his dirty tricks).
So Bush is rarely asked hard questions. Besides, a good orator and debater like Blair can usually handle difficult questions even if they are unexpected; Bush … well, you’ve seen him in action. More hard questions for Bush would result in nothing but chaos.
PS: December, thank you for amusing us. Your stubborn arguments and outright lies, particularly on the subject of France, are quite impressive feats of ignorance. How do you screw your eyes that shut against information so that nothing but cheap propaganda ever penetrates??