Do you really think the US has any real concern about being attacked? There is plenty to say about US policies, both good and bad. Part of that is the nearly $1T per year spent on the military. I don't think you'll find many credible people who think attacking the US will be good for whoever does it.

Attacking the US has been, historically, one thing that tends to unite the country. We - Americans - like building shit and we like fighting people. We never stop building new weapons. But when there is no-one to fight, we fight each other. There is a huge social divide in the US right now. You want to fix that, attack us.

*Edit: spelling