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.
The President of the Senate may also preside over most of the impeachment trials of federal officers. However, whenever the President of the United States is impeached, the US Constitution requires the Chief Justice of the United States to preside over the Senate for the trial. The Constitution is silent as to the presiding officer in the instance where the vice president is the officer impeached.