A lawsuit was filed in federal court this week challenging Louisiana’s $100,000 limit on contributions to political action committees (PACs).

The plaintiff in the suit is an independent expenditure-only PAC called The Fund for Louisiana’s Future. It is arguing that, because it only makes expenditures independent of any candidate, the limit violates the First and Fourteenth Amendments.

According to The Advocate, the PAC was created to support Sen. David Vitter’s future bid for governor or re-election bid for Senate.