In a new test of campaign donors’ free-speech rights, the Supreme Court announced Tuesday it will consider a case challenging the limit on how much individuals are allowed to donate to federal candidates and political parties.

The high court said it will hear a case brought by Alabama businessman Shaun McCutcheon and the Republican National Committee, who seek to do away with the $123,200 aggregate limit that an individual can donate in a two-year election cycle to all federal candidates, parties and traditional political action committees.

They argue that the limit violates a person’s rights to free speech under the First Amendment, and hurts a candidate’s ability to compete in a new era of unrestricted campaign spending by independent groups.

The court’s move comes three years after its Citizens United decision ended the ban on corporate and union donations to independent groups who want to influence congressional or presidential elections. The case will be considered in the court’s next term, which begins in October.