2 U.S. Code § 121e - Payment of fees for services of Attending Physician and for use of Senate health and fitness facilities
The Senate Committee on Rules and Administration shall promulgate regulations—
(1) pertaining to the services provided by the Attending Physician and the operation and use of the Senate health and fitness facilities; and
(b) Withholding of fees from salary
The Secretary of the Senate is authorized to withhold fees from the salary of an individual authorized by such regulations to receive such services from the Attending Physician and to use the Senate health and fitness facilities.
(c) Deposit in General Fund
The Secretary of the Senate shall remit all fees required by subsection (a)(2) of this section that are collected pursuant to subsection (b) of this section or by direct payment to the General Fund of the Treasury as miscellaneous receipts unless otherwise provided by law.
(d) Effective date
The provision  of this section shall take effect on April 9, 1992.
 So in original. Probably should be “provisions”.