Where a disparate impact is shown, the plaintiff can prevail without the necessity of showing intentional discrimination unless the defendant employer demonstrates that the practice or policy in question has a demonstrable relationship to the requirements of the job in question.
The Chief Justice only presides at presidential impeachment trials and will serve as our example to illustrate the process. In non-presidential impeachment trials, the Vice President or Senate pro tempore (temporary president of the Senate) presides at the trial.
Only two chief justices have ever exercised that authority: Chief Justice Rehnquist, who presided over the impeachment trial of Bill Clinton; and Chief Justice Salmon Chase, who presided over the impeachment trial of Andrew Johnson.