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 Senate, in turn, tries the accused on the charges provided by the House. Few guidelines exist for these Senate trials. If the President has been impeached, the Chief Justice of the Supreme Court is designated to preside; the Vice-President has presided in all other instances.