The Supreme Court decision killing limits on total donations to political candidates means billionaires will be running amok. Casino magnate Sheldon Adelson can lay out astronomical sums to help Republicans. Oilmen Charles and David Koch can see him and raise him. Former New York Mayor Michael Bloomberg can burn through his fortune like a blowtorch.

Oh, wait. They already did all that. Under this ruling, tycoons will have one more relatively modest way of supporting the candidates and causes they like. But trust me: You won’t be able to see a difference.