If you were president how would you respond to the threat from ISIS?

[Xyzse]

30. Probably finally use it as an impetus for infrastructure spending.

1 - The attacks we received are attacks of opportunity, meaning that they can only do things as they see it. They can't really attack using long planned methods. So, the best thing to do, is to fix things so that there are less opportunities to exploit.

2 - Improve roads, public spaces, medical centers (particularly by expanding health care). Couch it as improving security, and planning for disasters. If we as a society plan for natural disasters, which are capable of creating damage that far exceeds any terrorist threat.
So, triage centers, access to hospitals, fire departments and police improvements are key to this.

Basically, improve construction here, and utilize existing talent within the US to improve health, security and infrastructure to reduce threat, while benefiting society as a whole.

This is far better than piddling our funds to a place that is for all intents and purposes is just a money drain hole.