Contrary to the imaginary world of modern Conservatives, it's well established that multiple rounds of Republican tax cutting have harmed the fiscal health of government without having any positive impact on economic growth. In fact simple logic says that concentrating vast wealth in the hands of a few ultra wealthy rather than huge numbers of hard working Americans who'll spend it more quickly has to decrease economic growth.
It doesn't end there, however. Those with so much wealth they can easily engage in speculative ventures without fear can also spend very significant amounts leveraging what they have to gain more in ways that don't even provide value to the economy. The McCutcheon decision is aimed at preserving and expanding the ability of wealthy elites to further damage the the economy with rent seeking.
The magnitude of “rent seeking” in our economy, while hard to quantify, is clearly enormous. Individuals and corporations that excel at rent seeking are handsomely rewarded. The financial industry, which now largely functions as a market in speculation rather than a tool for promoting true economic productivity, is the rent-seeking sector par excellence. Rent seeking goes beyond speculation. The financial sector also gets rents out of its domination of the means of payment—the exorbitant credit- and debit-card fees and also the less well-known fees charged to merchants and passed on, eventually, to consumers. The money it siphons from poor and middle-class Americans through predatory lending practices can be thought of as rents. In recent years, the financial sector has accounted for some 40 percent of all corporate profits. This does not mean that its social contribution sneaks into the plus column, or comes even close. The crisis showed how it could wreak havoc on the economy. In a rent-seeking economy such as ours has become, private returns and social returns are badly out of whack.
In their simplest form, rents are nothing more than re-distributions from one part of society to the rent seekers. Much of the inequality in our economy has been the result of rent seeking, because, to a significant degree, rent seeking re-distributes money from those at the bottom to those at the top.
But there is a broader economic consequence: the fight to acquire rents is at best a zero-sum activity. Rent seeking makes nothing grow. Efforts are directed toward getting a larger share of the pie rather than increasing the size of the pie. But it’s worse than that: rent seeking distorts resource allocations and makes the economy weaker. It is a centripetal force: the rewards of rent seeking become so outsize that more and more energy is directed toward it, at the expense of everything else. Countries rich in natural resources are infamous for rent-seeking activities. It’s far easier to get rich in these places by getting access to resources at favorable terms than by producing goods or services that benefit people and increase productivity. That’s why these economies have done so badly, in spite of their seeming wealth. It’s easy to scoff and say: We’re not Nigeria, we’re not Congo. But the rent-seeking dynamic is the same.