Insights by Thomas Sowell, Sr. Fellow, Hoover Institute at Stanford University

In recent years, a small but growing number of people have advocated a convention of states to propose amendments to the Constitution of the United States. The reaction to the proposal has been hostile, out of all proportion to either the originality or the danger of such a convention.

The political left has been especially vehement in its denunciations of what they call "messing with the Constitution." A recent proposal by Governor Greg Abbott of Texas to hold a Constitutional convention of states has been denounced by the Texas branch of the American Civil Liberties Union and nationally by an editorial in the liberal "USA Today."

The irony in all this is that no one has messed with the Constitution more or longer than the political left, over the past hundred years.

This began with Progressives like Woodrow Wilson, who openly declared the Constitution an impediment to the kinds of "reforms" the Progressive movement wanted, and urged judges to "interpret" the Constitution in such a way as to loosen its limits on federal power.

Read more: 'Messing with the Constitution'