Imagine an argument for the abolition of slavery based not upon natural law and fundamental human rights, but whether slavery is an effective means of production. Such an abolitionist might say, Slaves cannot be relied upon to produce all that the country requires. The subsequent debate would then center around the efficiency of slavery, rather than its morality. That's the character of our modern debate regarding taxation. The Wall Street Journal published an editorial on Monday demonstrating "the fiscal futility of raising rates on the top 2%, or even the top 5% or 10%, of taxpayers to close the deficit."...