Where should we move to in the USA?

We are thinking about moving to the USA, we are a Dutch family of 4 (2 kids under the age of 6).

I have lived in the US myself, Chicago and Iowa. I have enjoyed Chicago, but the reason we are moving is to get to a better climate and get more square footage in our house… So living downtown somewhere is not really an option.
We are also looking for a place that is safe, for us and our kids (no tornado’s, earthquakes and violence).. And where we can find a job.. both of us work in graphic design.

Did I just scratch out all options in the US, or are there some area’s left where a European family could settle?