Despite an objection that the move runs counter to a free enterprise system, the House gives tentative approval to a requirement that nearly all gas sold in the state by 2008 have at least a 10-percent ethanol blend. Supporters say the requirement would greatly boost the sale of ethanol, which would raise the price of corn, clean up the environment, and reduce the dependence on foreign oil. Missouri has three ethanol plants built with two under construction. One more positive vote sends the bill to the Senate.