WASHINGTON (AP) ? The House on Wednesday approved a new gold-colored coin bearing the faces of presidents to join the unpopular $1 Sacagawea coin in circulation, hoping a new design will spur use of dollar coins. By a 422-to-6 vote, the House approved a plan for the U.S. Mint to begin selling the coins early next year.The bill also creates what would be the nation's first investment-grade 24-karat gold bullion coin. Intended for collectors, it would carry portraits of first ladies and a have a face value of $10