This is partly why I believe nullification is necessary and a constitutional convention is not the answer. Nullification can be used again and again each time it is apparent Congress has stepped way out of line. A "con-con" will be a one-shot, chaotic affair where everyone will try to get his/her pet issue addressed and may well result in significant erosion of the core principles without any hope it will actually restrain future abuses of federal power.

If we held a con-con 10 years ago, who would have predicted that 10 years later, Congress would require all citizens to buy health insurance? What language in the 'new' constitution would we realistically have thought to include that would have guaranteed this issue would not need to be addressed again? I thought it was very clear under the current version of the Constitution that health care is not a topic for federal legislation and yet, here we are! With a con-con we could easily end up in WORSE shape than today!

Since there's no way to predict the junk Congress, et al will dream up in the future, we need a way to react AFTER it has occurred and the only practical way I can think of is nullification.