“We have heard such claims before and they proved to be groundless. Indeed, they are simply lies. The purpose of cutting taxes is not in fact to raise growth but to downsize government, which is an end in itself for Republicans, whether or not it raises growth. They believe there is only so much freedom to go around and when government gets bigger it necessarily comes at the expense of individual liberty. Therefore, cutting government is per se a good thing.
Republicans also believe in a theory called “starve-the-beast,” which posits that the only way to cut spending is to slash taxes first. It is precisely because tax cuts reduce revenue and raise the deficit that this works. Deficits, in the Republican mind, arise only because of spending, never because of tax cuts. Thus their response to higher deficits is always to cut spending.”