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.
In President Clinton's impeachment trial in 1999, Chief Justice William H. Rehnquist ruled on some procedural questions, but the Senate never challenged, much less overruled, any of these rulings. A third question revolves around which procedures the Senate must employ in impeachment trials.