An NYT Editorial:
The Supreme Court may be about to radically change politics by striking down the longstanding rule that says corporations cannot spend directly on federal elections. If the floodgates open, money from big business could overwhelm the electoral process, as well as the making of laws on issues like tax policy and bank regulation.
. . .
Most disturbing, though, is the substance of what the court seems poised to do. If corporations are allowed to spend from their own treasuries on elections — rather than through political action committees, which take contributions from company employees — it would usher in an unprecedented age of special-interest politics.
Corporations would have an enormous say in who wins federal elections. They would be able to use this influence to obtain subsidies, stimulus money and tax loopholes and to undo protections for investors, workers and consumers. It would take an extraordinarily brave member of Congress to stand up to agents of big business who then could say, quite credibly, that they would spend whatever it takes in the next election to defeat him or her.