As the Supreme Court decides whether or not to hear a challenge to Montana’s prohibition on corporate independent expenditures to affect state elections, Senators John McCain (R-AZ) and Sheldon Whitehouse (D-RI) urged the court to let the Montana law stand, according to a report in Roll Call. Since that decision was handed down, super PACs have spent close to $100 million in this election. It’s time to take another look at the system and restore the balance of power to the people.

In the wake of Citizens United, the 2010 Supreme Court decision that opened the floodgates to unprecedented, unlimited corporate spending on politics, municipalities across the country have enacted resolutions calling for a constitutional amendment to overturn the decision. Passed before the Supreme Court’s decision, Montana has refused to stop enforcing its clean elections laws. Three corporations have filed a challenge, claiming the law is invalid under the Court’s ruling.

The Court can and should use this case as a means to full re-examine the Citizens United decision. Justice Ruth Bader Ginsburg acknowledged that the case presents the Court with an opportunity to re-examine the Citizens United case. “A petition for certiorari will give the court an opportunity to consider whether, in light of the huge sums currently deployed to buy candidates’ allegiance, Citizens United should continue to hold sway,” Justices Ginsburg, joined by Justice Stephen Breyer, wrote in a statement.

Senator McCain is a longstanding proponent of campaign finance reform, and Senator Whitehouse is a supporter of a constitutional remedies to overturn Citizens United. Together they filed an amicus brief, echoing the justices’ concerns: “Evidence from the 2010 and 2012 electoral cycles has demonstrated that so-called independent expenditures create a strong potential for corruption and the appearance thereof. The news confirms, daily, that existing campaign finance rules purporting to provide for ‘independence’ and ‘disclosure’ in fact provide neither.” Representative Chris Van Hollen (D-MD), Montana Attorney General Steve Bullock and others also filed briefs urging the Court to either let the Montana ban stand or re-examine the Citizens United Ruling. A decision as to whether to hear the case is expected by June.

The Supreme Court was wrong when it decided that corporations should be able spend their vast treasuries on elections. The State of Montana is providing a welcome chance to fix that mistake.