Since we all understand that high oil prices help the economy why would Obama want to lower them?

Oil price are high because of speculation. And if oil doesn't go in the way of speculation the investors can be majorly hurt. Lower oil prices means that shipping costs will be less. Making transporting for commodity traders a lot cheaper. Airplane tickets will be cheaper and taxis will be cheaper. Traveling to work in the morning will be cheaper. And cheaper oil is better for the speculators on wallstreet and in your neighborhood. So lower prices do HELP the economy.