The Supreme Court has never ruled that Congress can use the Commerce Clause to require individuals to engage in an activity they have chosen to avoid. Yet that is precisely what Obamacare does: It forces Americans without health insurance to purchase coverage. Such a requirement is unprecedented and unconstitutional.
More John Cornyn quotes :
Raising taxes is the last thing we should do amid the weakest economic recovery since World War II. Unfortunately, even if we avoid the full 'Taxmageddon' scenario, President Obama's health care law also contains a new surtax on investment that will take effect in 2013.John Cornyn
By the Obama administration's reasoning, it would be constitutionally permissible to make Americans purchase nearly any product (broccoli, gym membership) that improved their health and thereby contributed to lower health-care costs.John Cornyn