Taxpayer X Believes That the Federal Endangered Species Act Is

Taxpayer X believes that the federal Endangered Species Act is unconstitutional. Before his case can be heard on its merits, he will have to show that

A) he has exhausted all other means to settle his grievance.
B) more than $10,000 is involved.
C) he has suffered personal harm as a result of enforcement of the act.
D) Congress will not change the law.
E) the legislative branch is incapable of addressing the issue in a competent manner.