I voted for Obama because I want to sleep. What keeps me up at night is the anger I feel because my husband can't meet the row of alcoholics and pill poppers that make up my lineage. If only he could witness, in person, what a paranoid, trembling mess my remaining family of underpaid, suffering Americans are, he might realize how well I've turned out!
I think there may be the possibility that, if an American comedian suddenly appears on TV or radio from nowhere, there is (as seen by producers) the risk that the audience may think they are vast successes in the US and have not been 'discovered' and whisked up from the relative obscurity of comedy clubs by talented UK producers.