John Edwards' legal team has a new problem, after prosecutors revealed a "smoking gun" note from a donor who allegedly ponied up $700,000 to pay off Edwards' mistress. Rachel "Bunny" Mellon, now 99, wrote a note after Edwards took flack for getting $400 haircuts. "From now on, all haircuts, etc., that are necessary and important for his campaign -- please send the bills to me," she said. Later, she helped pay Rielle Hunter off while she was pregnant with Edwards' child. Edwards defense team claims that money was a gift, and not related to the campaign. But the Mellon note seems to contradict that claim.