US Vice President Joe Biden, known as being prone to gaffes now and then, has compared some Republican lawmakers to Neanderthal cavemen. Biden was speaking on Thursday night at a reception marking the anniversary of a law designed to fight violence against women. Biden first drafted and defended the law 19 years ago as a US senator. It was renewed this year but only after a months long fight in Congress, particularly in the House of Representatives, which is controlled by the Republicans. Biden said he was stunned that there had been debate on the law. "I'm going to say...