7: The Elector Qualifications Clause —Derek T. MullerEssay No. 14: House Impeachment Clause —Michael J. GerhardtEssay No. 15: The Senate Clause —Martin GoldEssay No. 16: The Senatorial Classes And Vacancies Clause —Martin GoldEssay No. 20: The Senate Impeachment Trial Clause —Michael J. GerhardtEssay No.