The insurers fear that the group will argue, as a Treasury report did in June 2005, that the federal program interferes with market forces.
Walker was involved in a prominent Treasury report of December 3, 1845.
The Treasury report concluded that the current "classical" system of tax law exacts a heavy toll.
The Treasury report meets that challenge intelligently with two fundamental recommendations.
The Treasury report criticized China's policy as dangerous to itself, its Asian neighbors and global growth.
The Treasury report said these products also "unnecessarily increase consumers' total borrowing costs, and disguise the true cost of the insurance on a monthly basis."
The dollar reached a record low against the yen in the wake of the Treasury report.
So does the Treasury report show a looming Social Security crisis?
What the Treasury report recommended was that the Government mint 50 new varieties of quarters starting in 1999 - five states a year.
The Treasury report is not expected to cause any sudden conversions among Democratic tax writers.