Wilbur v. United States (281 U.S. 206…
“ Mandamus is employed to compel the performance, when refused, of a ministerial duty, this being its chief use. It also is employed to compel action, when refused, in matters involving judgment and discretion, but not to direct the exercise of judgment or discretion in a particular way nor to direct the retraction or reversal of action already taken in the exercise of either. [7] The duties of executive officers, such as the Secretary of the Interior, usually are connected with the administration of statutes which must be read and in a sense construed to ascertain what is required. ”
