Future45 and American CrossRoads are GOP-controlled SuperPacs that have funded attack ads against Hillary Clinton using talking points raised by Bernie Sanders.
Future45 “is funded by some of the country’s largest GOP donors, including hedge fund billionaire Paul Singer” “In just one recent ad from the influential Republican super PAC American Crossroads, the uber-conservative group spent a substantial amount of its and the Kochs’ $4.3 million against Clinton parroting a constant Sanders’ attack against Clinton for earning Wall Street speaking fees. There have been no small number of pundits who have suggested, not errantly according to the American Crossroads ad campaign, that a fair share of the attacks on Clinton from “alleged” liberals are being funded and promoted by uber-conservative groups.”
http://www.politicususa.com/2016/02/01/bernie-sanders-super-pac-money-democratic-rivals.html
https://www.bostonglobe.com/news/politics/2015/12/08/gop-groups-launch-targeting-hillary-clinton/zXuBlT4tB6NBZjNLv4XQmO/story.html