Relating to retirement; modifying excess contribution return requirements under the higher education individual retirement account (IRA) and supplemental retirement plans; creating an exception to the prohibition on distributions from the supplemental retirement plan before termination of employment under certain collective bargaining agreement negotiation conditions; expanding application of public plan fiduciary responsibility requirements to the public employees defined contribution plan under the public employees retirement association (PERA), the higher education plans and the arts board and humanities commission retirement plans and expanding the list of fiduciaries; expanding fiduciary activities to the selection of financial institutions and investment products; providing for the application of certain investment strategies to the state unclassified employees retirement plan under the Minnesota state retirement system (MSRS), the public employees defined contribution plan, the higher education plans and the arts board and humanities commission plans; authorizing the board of trustees of the Minnesota state colleges and universities (MnSCU) to extend certain vendor contracts under certain mutual agreement conditions (ra)