Yes they don't, mostly because it's a relatively small group of individuals dispersed in a huge country. The same cannot be said of the Iranian government.
You said
> An attack on American soil could be met with a literally nuclear response against Iran or whoever perpetrated it.
Al Qaeda is in the "whoever" category that you claimed would be met with a nuclear response.
You said
> An attack on American soil could be met with a literally nuclear response against Iran or whoever perpetrated it.
Al Qaeda is in the "whoever" category that you claimed would be met with a nuclear response.