Eric Dash of the New York Times writes - “Wall Street’s main lobbying arm has hired a top Supreme Court litigator to study a possible legal battle against a bank tax proposed by the Obama administration, on the theory that it would be unconstitutional, according to three industry officials briefed on the matter.

In an e-mail message sent last week to the heads of Wall Street legal departments, executives of the lobbying group, the Securities Industry and Financial Markets Association, wrote that a bank tax might be unconstitutional because it would unfairly single out and penalize big banks, according to these officials, who did not want to be identified to preserve relationships with the group’s members.”

To read the rest of the story click here.