Full story here: BBC NEWS | Americas | US rivals try to woo Christians So according to Obama, the greatest moral failure of America was its insufficient help to the disadvantaged. He also supports same-sex civil unions (while saying "marriage should be a union between man and woman). He reaffirmed his pro-choice stance on abortion. According to McCain, America's greatest moral shortcoming is its citizens' failure to devote themselves to causes greater than their self-interests. He sees himself as pro-life president. He reaffirms his stance against abortion from the moment of conception. He also supports preserving the unique status of marriage between a man and a woman (he is against same sex marriages). ****** What do you think of their stance regarding moral failure of the US and on abortion/marriages?