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 hearing for removal is conducted in the Senate and in the case of the impeachment of a President, the Chief Justice of the United States presides over the proceedings (otherwise the Vice-president presides) which are conducted as a trial with witnesses being heard under oath or affirmation.