20 CFR §416.1237

1. (a)Assistance received under the Disaster Relief and Emergency Assistance Act or other assistance provided under a Federal statute because of a catastrophe which is declared to be a major disaster by the President of the United States or comparable assistance received from a State or local government, or from a disaster assistance organization, is excluded in determining countable resources under § 416.1210.
2. (b)Interest earned on the assistance is excluded from resources.