s 7 Non-assignability or attachment, etc., of benefits
7. No payment, allowance or other benefit payable under the INVEST Plan (whether on death, retirement or resignation of a member or otherwise), and no contribution by the Government made under the INVEST Plan and no interest thereon shall be assignable or transferable, or liable to be garnished, attached, sequestered or levied upon for or in respect of any debt or claim, other than —(a) a debt due to the Government; or (b) an order of court for the payment of periodical sums of money towards the maintenance of the wife or former wife or minor child (whether legitimate or not) of the member to whom the payment, allowance or other benefit has been granted.