What is the importance of the secretary of the treasury?

Question

What is the importance of the secretary of the treasury?

Answer 1

Not at all clear.

Certainly s/he manages the Treasury Department and jawbones Wall Street on occasion, but in the larger context, the importance of the Treasury Department does not seem all that great.

However, it is the case that the choice of the Secretary of the Treasury is a way for the President to show that he is listening to Wall Street and has its interests in mind.