My idea was to keep them as it'd provide enough votes to get rid of the rest of the crap, and then let them have a chance to move on to more pressing matters like tax reform before returning to it later. That's just me armchairing, though.
That's a terrible analogy. To begin with, there is a difference between the inherent powers of the state and what is allowed by the federal government via the constitution. Secondly, the insurance is only required in order to protect other drivers, hence the ability to purchase liability only. Finally, driving is optional and/or a privilege. Insurance is required to be in good standing with the US Government or you are fined.
Here's a piece that probably explains it better than I do:
Blog: Health insurance mandates vs. Auto liability requirements - a false analogy