The U.S. Supreme Court agreed Tuesday to consider taking another step toward dismantling campaign finance laws, potentially freeing wealthy donors to give as much as they want in any election cycle and raising the possibility that it could overturn limits that apply to individual candidates as well.

In its landmark Citizens United decision, the court ruled in 2010 that corporations, unions and individuals could spend unlimited sums on campaign ads so long as they are independent of the candidates and political parties. That triggered the creation of so-called "super PACs," which can raise and spend huge sums on politics, so long as they are ostensibly independent of a candidate or party.