598.206—Holding of funds in interest-bearing accounts; investment and reinvestment.

(c) Blocked funds held in instruments the maturity of which exceeds 180 days at the time the funds become subject to § 598.202 may continue to be held until maturity in the original instrument, provided any interest, earnings, or other proceeds derived therefrom are paid into a blocked interest-bearing account in accordance with paragraph (b) or (d) of this section.
(d) Blocked funds held in accounts or instruments outside the United States at the time the funds become subject to § 598.202 may continue to be held in the same type of accounts or instruments, provided the funds earn interest at rates that are commercially reasonable.

Code of Federal Regulations

Note to § 598.206 : Please refer to § 598.505 for authorized investment and reinvestment of certain funds held in blocked accounts.