Ark. Const. amend. 70, § 1

(a) No official of the Executive Department shall be reimbursed by the State of Arkansas for any expenses except those reasonably connected to their official duties and only if such reimbursement is made for documented expenses actually incurred and from the regular budget appropriated for the official’s office. Such restrictions on expense reimbursement are of a general application and also are intended specifically to prohibit the appropriation and use of public relations funds. Except as provided in this Constitution, such officials of the Executive Department shall not receive any other income from the State of Arkansas, whether in the form of salaries or expenses. (b) Except as provided in this Constitution, no member of the General Assembly shall receive any other income for service in the General Assembly, whether in the form of salaries or expenses, including, but not limited to, public relations funds. Provided further, that no member of the General Assembly shall be entitled to per diem unless authorized by law, or to reimbursement for expenses or mileage unless authorized by law, documented, and reasonably related to their official duties.