No where in the act does it measure what is considered "obscene" to children. According to this act, this could be anything the Government deems obscene.
Such ambiguous language can be used to violate the individual rights of adults on the internet regardless of whether or not the site hosts adult content.
Do you even know what you're proposing? This should never pass. "Obscene" needs to be completely removed from the paragraph (4) at the very least.