The Constitutional amendment that established the Endowment (2000) 
Article 10, Section 40 of the Oklahoma Constitution

The original enabling legislation 
HB 1003 the Oklahoma Tobacco Settlement Endowment Trust Fund Act (2001)

Amendments to the Oklahoma TSET Fund Act: 

• HB 1457 passed in 2003 
• SB 1091 passed in 2006
• SB 267 passed in 2009