US corporate taxes are the second-highest in the world behind Japan.
Is that statutory rates, or effective rates?
Also note that we're pretty solidly on the low end in personal income tax.
You can call US taxes a lot of things, but "low" is not one of them, especially considering the services what we get from the government in exchange for the taxes we pay.
If you want to argue that we could potentially be getting a better return on our tax dollars, then I'll agree. If nothing else, the example of per-capita public health spending comes to mind -- for a smaller amount, many other countries pull off universal insurance coverage. And I'm sure that aside, there's always work to do -- I think it'll be a long time before either by active policy study or by the evolutionary algorithm of competitive markets we've discovered most of the easy efficiency gains.
But if you want to argue that the U.S. isn't a pretty good place to live or do business, or if you want to argue that tax contributions to that are negligible, I'm off that boat.