We reserve the right to take any of the following actions if, in our sole discretion, we deem the action to be in the best interests of the United States:

(a) Refuse to open an account for any person;

(b) Close any existing account, redeem, sell, or liquidate the securities held in the account, and pay the proceeds to the person entitled;

(c) Suspend transactions with respect to an account or any security held in an account; or

(d) Take any other action with regard to any account that we deem necessary, if not inconsistent with existing law and existing rights.