[cnn-photo-caption image= http://i2.cdn.turner.com/cnn/2008/POLITICS/06/14/campaign.wrap/art.obamawayne.ap.jpg caption="Sen. Barack Obama holds a town hall meeting with residents in Wayne, Pennsylvania, on Saturday."]
(CNN) - Sen. Barack Obama told voters in Wayne, Pennsylvania, on Saturday that he'll cut taxes for the middle class, raise taxes for the wealthy and pour more money into what he calls green energy.
Later Saturday, in Illinois, Obama helped fill sandbags near the Mississippi River in an area devastated by flooding, his campaign said. The same day, Sen. John McCain extended his sympathies to those affected by flooding in the Midwest.
According to his campaign, Obama wants to invest $150 billion over the next 10 years to establish a green energy sector; create a national low-carbon fuel standard to ensure that the fuel is more efficient, and invest in clean energies like solar, wind and biodiesel.
That, according to the campaign, would create up to 5 million new green energy jobs.
Obama also blasted McCain, the presumptive GOP presidential candidate, for his recent silence on energy reform and his support for a gas tax holiday.
"He isn't offering any solutions to help Americans pay for high gas prices. Instead, he's proposing a gas tax holiday that's nothing more than a Washington stunt," Obama said. "I was for the idea back then, but I've learned from my mistake, because I don't think it's right to say you're offering families relief when you're just boosting oil company profits."
Obama says McCain's gas tax plan would "actually do real harm" and take "$3 billion a month out of the highway trust fund and hand it over to the oil companies."