Cambridge, Mass.

Nine senators introduced a resolution early this month that would amend the Constitution to overturn the Supreme Court’s decisions in Citizens United v. Federal Election Commission (2010) and Buckley v. Valeo (1976). These two cases had restricted Congress’s power to limit contributions to political campaigns and independent political expenditures, by both individuals and corporations. Under the amendment, Congress and the states would have the power to limit both contributions and independent expenditures.

“By limiting the influence of big money in politics,” said one of the senators, Tom Harkin, an Iowa Democrat, “elections can be more about the voters and their voices, not big money donors and their deep pockets. We need to have a campaign finance structure that limits the influence of the special interests and restores confidence in our democracy.”

This proposal is just the latest verse in a very tired song. Once again, the answer to the problem of campaign finance is to “just say no.” Limit contributions. Limit independent expenditures. Limit soft money donations. No, no, no.

But at some point, Congress has got to muster the courage to say what every sane reformer recognizes: that we won’t solve the problem of “big money donors” until Congress begins to say yes. Not just finance limits, but also finance support. Not just ways to restrict, but also ways to enable.