Despite court ruling, Congress can still limit campaign finance

[Commentary] Now that the Supreme Court has struck down century-old restrictions on corporate money in politics, is Congress prepared to strike back?

Many suppose that the court has made it impossible for Congress to restrict corporate speech. But this is wrong. While Congress can't issue a broad ban on all companies, it can target the very large class that does business with the federal government and ban those companies from "endorsing or opposing a candidate for public office." A 2008 Government Accountability Office study found that almost three-quarters of the largest 100 publicly traded firms are federal contractors. If Congress endorsed our proposal, these companies -- and tens of thousands of others -- would face a stark choice: They could endorse candidates or do business with the government, but they couldn't do both. When push came to shove, it's likely that very few would be willing to pay such a high price for their "free speech."