I'm running out of synonyms for "stupid".
That was Economist Stephen Gordon, referring to Darth Steve's plan to cut diesel taxes in half. Anybody who knows economics knows what would happen next: an immediate raise in the price of diesel to where it was already, since that was the market price, and an increase in carbon emissions. Which makes it a gift to oil companies that would hurt the environment.
(Dark Side is strong in that'un, huh?)