CHICAGO - Only six insurance carriers have told the state of Illinois they want to sell a combined 165 health policies on the state's online insurance marketplace under the nation's new health care law — numbers far lower than expected, raising concerns the trend will hold true across the country. Fewer health plans could mean less competition and possibly higher premium prices. Officials in President Barack Obama's home state had anticipated some 260 health plans would be offered by 16 different insurance carriers, based on a survey the Illinois Department of Insurance conducted last fall.