As a security professional I think making the Government responsible for IoT security is a bad idea for two reasons. One, we've already seeing the Governments willingness to use cell phones as a means of spying on the public. Being in charge of security IoT just gives them more resources. Second, the powers that be can be lobbied but the companies they are supposed to be overseeing, Just look at Net neutrality as an example. In this case I feel that public is better off learning to secure their own devices and voting with their dollars. If company has bad security practices than don't buy from them. It will force them to make chances and send a message to other companies. This is one of those cases where I don't think government involvement is a good thing.