Cantor's comments mirror the official Republican response to the speech, delivered by Louisiana Gov. Bobby Jindal, who mixed a defense of core Republican values with an overall pledge to work with Obama.
Djokovic has suffered mixed fortunes since arriving in Australia for the defense of the title at the opening grand slam of the season later this month.
Foreign exposure is a mixed blessing these days in the commercial world, but in the defense business it is viewed as a hedge against unpleasant surprises from the federal government such as budget sequestration.