Why do liberals compare the health care mandate to auto insurance mandates?

Your auto insurance mandate argument ignores the federal structure of the United States government. There is no federal auto insurance mandate. These are all state or local level laws. These kinds of laws are unconstitutional in a few ways, including under the 10th Amendment. Since regulating motor vehicles and their operations fall under the domain of the states, the federal government has no authority here. Furthermore, one cannot ever avoid the health insurance mandate like someone can avoid an auto insurance mandate. No one forces people to drive. People are free to choose to walk, use public transportation, carpool, etc. Avoiding the health insurance mandate would require someone to relinquish their United States citizenship. This isn't portion isn't directed at you, but at the peanut gallery in general: The individual health insurance mandate is not authorized by Congress' taxation authority because it is not a tax. Tax revenue is paid by taxpayers directly to the government, while premiums paid due to the mandate will go directly to private entities (i.e. insurance companies). What good is a mandate you can opt-out of? Winning logic! Wow, so many straw man arguments from the libs! The topic at hand is finding the constitutional authority for the mandate, not to prove its benefits nor its origins. Learn to argue.