Dave Koppel (The Volokh Conspiracy), Is the Tax Power Infinite?:
For the moment, let’s put aside the question of whether the Obamacare tax is an Article I tax, or a 16th Amendment income tax. Does Congress have the infinite power to control people’s behavior (such as by ordering them to engage in commercial transactions) via the tax power? I suggest not. …
However, if the tax power means that Congress can order citizens to buy something they don’t want to buy, why does Congress not have the power to assess taxes on people who get too little sleep, or too much sleep, and thereby harm their own health and the public fisc? Or who wear hats so little that they increase their risk of skin cancer? Or who wear hats so often that they dangerously reduce their levels of vitamin D? In Sonzinsky v. United States (1937), the Supreme Court declared that it would not inquire into hidden regulatory motives that might have motivated a tax. But in Sonzinsky, the underlying activity (running a for-profit commercial business selling machine guns) was unquestionably within the scope of commercial activities that might be subject to an excise tax.
In contrast, not buying health insurance is not in its nature a commercial taxable activity. Neither is wearing a hat, or getting up when you please, or going to bed when you think it proper.
- Tom Smith (San Diego), Tax Powers Gone Wild
