Feds Bribing Families Into Eating Healthy?

Feds Bribing Families Into Eating Healthy?: "Your parents always told you to eat your vegetables but now the U.S. Agriculture Department is putting its money where its mouth is, launching a test project offering low-income families a 30 percent discount on fresh fruits and vegetables"

Hmm - seems like this is sort of like giving tax credits to encourage behavior the Government deems acceptable? Isn't that the basic theory or conservative economics- to give people more of their money to spend it in their best interest therefore stimulating the economy?

Notice that the Feds didn't tax "bad" food but discounted good food. Not sure I see the Federal Government's role here but there is a broader message in this story...