Super PACs Coordination w Campaigns

This and this article argue that super PACs have now become an integral part of presidential campaigns, pointing out, for example, that since Jeb Bush is not yet an official candidate, he can personally raise money for his PAC, Right to Rise.  While a lawsuit is being prepared to challenge the closeness of super PACs and campaigns, the NYTimes claims that the distinctions have been all but lost.  Many are being run by former staffers and handling more and more of the main tasks (ads, for example).  Above is a video from Bush's Right to Rise super PAC.

Citizens United v. FEC allowed the existence of super PACs.  All this is being done so that candidates can get around the $2700 limit on individual donations.