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.
Once the House has passed Articles of Impeachment, detailing the high crimes and misdemeanors that they believe the President has committed, they send those Articles to the Senate for trial. The trial is conducted in the Senate, with the Chief Justice of the Supreme Court presiding, and a group of managers from the House prosecuting the case. Conviction requires a two-thirds vote of the Senate on a given charge.