Political questions can and likely will be asked during your interview. They may present it as an ethical situation (no universal healthcare, pt. w/o anything shows up in the ED, what do you do?) OR they may blatantly ask you your thoughts on X topic. Be well versed in topics, especially given the political climate surrounding healthcare.
Give a solid answer supporting and bashing both sides. "Well I see Side A is good because of 1, 2, and 3, but, it does impact x, y, and z. This helps/hurts healthcare providers but hurts/helps patients. However, Side B..."
Finally, you may be asked for your opinion if you are tip-toeing around answering the question at hand.