; and (2) employees of such department, agency, or instrumentality may be detailed to the Office of the Architect of the Capitol on a reimbursable or non-reimbursable basis. (b) Duration The detail of an employee under a joint agency agreement under this section shall be for such duration as may be provided in the agreement, except that in the case of a detail made on a non-reimbursable basis, the duration of the detail may not exceed one year unless the Architect of the Capitol and the head of the department, agency, or instrumentality involved each determine that an extension of the detail of the employee is in the public interest. (c) No effect on appropriations of recipient of non-reimbursable detail For purposes of any law, rule, or regulation, the detail of an employee on a non-reimbursable basis under a joint agency agreement under this section for a fiscal year shall not be treated as an increase or modification of the appropriation for the fiscal year of the office to whom the employee is detailed. (d) Effective date This section shall apply with respect to fiscal year 2019 and each succeeding fiscal year. Acceptance of travel expenses from non-federal sources 145. (a) Permitting acceptance of expenses Notwithstanding any other provision of law, the Architect of the Capitol may accept payment or authorize an employee of the Office of the Architect of the Capitol to accept payment on the Office's behalf from non-Federal sources for travel, subsistence, and related expenses with respect to attendance of the employee (or the spouse of such employee) at any meeting or similar function relating to the employee’s official duties. Any cash payment so accepted shall be credited to the appropriation applicable to such expenses. In the case of a payment in kind so accepted, a pro rata reduction shall be made in any entitlement of the employee to payment from the Government for such expenses. (b) Prohibiting acceptance from other sources Except as provided in this section or section 7342 of title 5, United States