"The Interpretive Bulletin makes clear that, in the DOL's view, the above approaches do not undermine ERISA's exclusive regulation of ERISA plans.... Whether private employers will broadly embrace -- or even adopt -- state-supported retirement plans remains to be seen. However, it is clear that states could be powerful new entrants into the retirement plan marketplace. With this Interpretive Bulletin, the DOL has given states the green light to move pursue strategies that encourage increased adoption of retirement plans by in-state employers."