In a rare joint campaign appearance, the president and vice president emphasized Democrats’ commitment to health care, a key issue in largely rural battleground North Carolina. It comes amid a national debate over whether states should expand Medicaid. NBC News’ Gabe Gutierrez reports. us polictics news  In a rare joint campaign appearance, the president and vice president emphasized Democrats’ commitment to health care, a key issue in largely rural battleground North Carolina. It comes amid a national debate over whether states should expand Medicaid. NBC News’ Gabe Gutierrez reports.