1. Institute martial law until perps are caught and the true nature of future threat is identified
2. Incarcerate/internment camps for many/all Muslims
3. Severe economic disruption with mass layoffs, stock market crash and huge loss of wealth
4. Possible internal civil war as the left/right disagreement erupts into condemnation and anger
5. Possible secession of state(s) in aftermath as a result of #4
6. Response in kind to perpetrators country including nukes or massive bombing
7. Massive world-wide condemnation of US response, loss of world-wide allies for decades.
No matter who the President is at that time, if the response in kind does not occur, then he will not be President for long. Our country will cease to exist as it is today, it could recover in the future with good leadership, but that would be seriously in doubt. The situation would be analogous with the Civil War when it took 50-60 years to heal the wounds and move on.
This is why the entire scenario is so important and why it is so frustrating to see the left politicize this situation so much.
Not only frustrating, it will be fatal to let them continue. There needs to be immediate pre-emption activity. Your #2 above should be considered, but instead of confining them, they should ALL be given a road map to the border for their own safety before the next attack, and in fact, may be the very thing we should do to prevent an attack.
It will be difficult if not impossible to guarantee their safety afterwards. Chaos will reign and looting and burning will be common in all urban areas. It will be difficult to know who the enemy is under such conditions and many innocents will perish.
The aftermath of another large-scale attack here will make the L.A. riots look like a revival meeting. Just my guess, based on the prevailing sentiment. This consequential scenario should not be overlooked by the purveyors of destruction.
"2. Incarcerate/internment camps for many/all Muslims"
How and where do we intern, say, a million people?
IMHO:
1.Totally agree.
2. No way (except possibly in a few small towns/counties).
3. Market crash - yes. Layoffs, no. Americans will never stop buying things.
4. No way. Do you have any idea of the weapons "the government" has at its disposal to put down armed rebellion?
5. see 4.
6. No. The present "ruling class" doesn't do things like this. That might kill some of their friends by mistake.
7. Yes, but not because of our agressive response. Quite the opposite, because of our weakness shown by a lack of response.