GRE General Test: RC-916758 GRE Reading Comprehension

Statistics indicate that, on the average, women executives’ salaries are about 20% lower than the salaries of men in comparable jobs. This is true despite the job discrimination suits filed in the 1970’s by the federal government against firms such as A.T. & T. and the Bank of America, as well as despite the passage of laws forbidding job discrimination by gender in many states and localities. In the face of this unrelenting prejudice against women, it is manifest that only an amendment to the U.S. Constitution can fully remedy the iniquities under which today’s women are laboring.
All of the following are weaknesses of the above argument EXCEPT that