U.S. Democratic presidential candidate Hillary Clinton made her first joint campaign appearance on Thursday with one of her most powerful supporters, first lady Michelle Obama, at a North Carolina rally to urge young people and women to vote.Clinton, a former first lady who lost the 2008 Democratic nomination to then-U.S. Senator Barack Obama before becoming his secretary of state, praised Michelle Obama for standing up for the rights of girls and women worldwide, drawing a sharp contrast with Republican nominee Donald Trump."I wish I didn't have to say this. ... But indeed, dignity and respect for women and girls is...