Page:Mississippi v. Tennessee (2021).pdf/15

12 our original jurisdiction must prove by clear and convincing evidence some real and substantial injury or damage.” ''Idaho ex rel. Evans'', 462 U. S., at 1027.

As Mississippi has neither sought leave to amend nor tendered a proposed complaint seeking equitable apportionment, we have no occasion to determine how these and other pertinent principles might apply.

Mississippi has failed to show that it is entitled to relief. We therefore overrule Mississippi’s exceptions to the Special Master’s report, sustain Tennessee’s, and dismiss the case. It is so ordered.