JONATHAN ADLER: Yes, Gov. Whitman, states may choose which federal laws to implement: Former EPA administrator Christine Todd Whitman appears to understand neither the Clean Air Act nor the U.S. Constitution. “Christine Todd Whitman served as the governor of New Jersey and administrator of the Environmental Protection Agency. She is now an energy and environmental policy consultant. Given Whitman’s experience, you might think she is an expert in environmental law and the relationship between the federal and state governments. Judging by Whitman’s latest op-ed in Politico, if you thought that, you would be wrong.”

To be fair, most of our ruling class seems similarly ignorant — or indifferent — regarding the Constitution.