Of course, one's spending proclivities have utterly nothing to do with one's competency as a judge. Nevertheless, Professor Mankiw points out that President Obama's liberal selection for SCOTUS is also liberal with her pocketbook.
Apparently, the new Supreme Court nominee Sonia Sotomayor is an example of the latter. The Washington Post reports that the 54-year-old Sotomayer has a $179,500 yearly salary but
On her financial disclosure report for 2007, she said her only financial holdings were a Citibank checking and savings account, worth $50,000 to $115,000 combined. During the previous four years, the money in the accounts at some points was listed as low as $30,000.
My grandmother would have been shocked and appalled to see someone who makes so much save so little.
Perhaps the "wisdom" of Judge Sotomayer doesn't extend to finances....