; Vacancies (A) In general A member of the advisory committee shall be appointed for the life of the advisory committee. (B) Vacancies Any vacancy in the advisory committee— (i) shall not affect the powers or duties of the advisory committee; and (ii) shall be filled in the same manner as the original appointment. (4) Chairperson and Vice Chairperson The advisory committee shall select a chairperson and vice chairperson from among the members of the advisory committee. (d) Meetings (1) Initial meeting Not later than 30 days after the date on which all members of the advisory committee have been appointed, the advisory committee shall hold the first meeting of the advisory committee. (2) Frequency The advisory committee shall meet not less than 4 times per year. (3) Quorum A majority of the members of the advisory committee shall constitute a quorum, but a lesser number of members may hold hearings. (e) Duties (1) Study and recommendations required (A) In general The advisory committee shall conduct a thorough study and develop recommendations to address the impact of WOTUS regulations on United States agriculture. (B) Matters studied The advisory committee shall study and develop recommendations to address— (i) the impact of the prior-converted farmland exemption on agricultural operations; (ii) common agricultural practices that are not exempted from WOTUS regulations under the activity-based permitting exemptions of the Environmental Protection Agency; (iii) instances in which the Corps of Engineers came to conflicting rulings for the same or similarly situated tracts of land; (iv) the impact of WOTUS regulations on secure food supply chains and rural infrastructure; (v) how WOTUS regulations can be structured to provide a clear, objective eyesight test for jurisdictional waters of the United States