Senator Jean Carnahan has hosted a U.S. Senate field hearing on prescription drugs for senior citizens. The Jefferson City gathering heard from witnesses who told of their problems paying for prescription drugs and who called on Senator Carnahan to help make those drugs more affordable. Senator Carnahan says she will return to Capitol Hill after Labor Day as she and fellow lawmakers take up the issue. She vows to do what she can to help ease the burden on the elderly who she says are making choices between prescription drugs and food.