New Jersey Gov. Chris Christie is bringing his blunt talk about fiscal responsibility to Washington this week in a speech sure to stoke speculation about his national prospects – which have intensified in recent weeks as some Republicans openly fret about the strength of their 2012 field.

Like Christie himself, the message he’ll deliver Wednesday at the conservative American Enterprise Institute is unorthodox and straightforward: he accuses both parties, Democrats and Republicans alike, of “timidity” in the face of the coming fiscal calamity.