Governed by MGL #29
Chapter 29 Section 38 was updated to allow the Treasury the flexibility to invest in securities as allowed by the Code of Federal Regulation 2A-7, which governs money market eligible investments.
MMDT - https://advisor.fidelity.com/afc/public/fitsco/mmdt.shtml
BidMass Program - https://www.bidmass.com/
TMANE - http://www.tmane.org/