You will be given a topic and an argument. Decide the argument's stance towards that topic. The argument's stance is in favor or against the topic. If the argument supports that topic, answer with "in favor"; otherwise, if the argument opposes the topic, answer with "against".
Q: topic: Constitutionality of US health insurance mandates
argument: Driving is not a choice for many; buying insurance is mandatory.
A: 
in favor