Washington (AFP) - US President Donald Trump's senior adviser Kellyanne Conway has come under fire after a picture of her casually kneeling on a couch in the Oval Office was widely shared on social media. In an image captured by an AFP photographer, Conway appears on the couch with her shoes on as Trump poses for a photo with leaders of historically black colleges and universities. Wall Street Journal columnist Bret Stephens was among those taking aim at Conway, suggesting that aides under previous administrations would have elicited even greater outcry. "If Rice or Jarrett had sat like this in...