President Bush says the slow growth of the economy is “not good enough for America,” but new rebate checks will inject some life and spending soon.

Bush said Friday, “This economy is going to come on. I’m confident it will.”

Rebate checks of up to $600 for individuals and $1,200 are starting to hit bank accounts this week. They are part of a broader economic stimulus plan that also includes tax breaks for businesses as an incentive to invest.

Bush called it “a robust attempt to inject life” that hasn’t fully kicked in yet. His pep talk about the economy came while visiting a technology plant in this St. Louis suburb.

Overall, the economy grew at a meager 0.6 percent in the first quarter of 2008.