How can funds be returned?
Primary source
Verbatim text below is from the Electronic Code of Federal Regulations (eCFR), a public-domain U.S. government work. Always verify the current version with the eCFR before relying on it for any legal matter.
Full Text
Funds may be returned either as cash or securities, which meet the requirements for investments in 25 U.S.C. 162a. Cash can be transferred to the US Treasury by Electronic Funds Transfers (EFT), or the Automated Clearing House (ACH) process. Tribes must coordinate the transfer of ownership in securities with us to ensure proper credit to the tribe. The securities must meet investment restrictions contained in 25 U.S.C. 162a.
This is legal information, not legal advice. Laws vary by jurisdiction and change frequently. Always verify current law with official sources and consult a licensed attorney in your jurisdiction for advice on your specific situation.