To be more specific, let's say instead "what do you think needs to be done to improve the United States?" Non-citizens are as welcome to answer this question as citizens, since non-citizens can get steamrolled by the US (or helped by the US) just as much as citizens can.
Well...what do you mean by improve?
I'm serious, it sounds like you have a vision (or are asking for a vision) of what the US ought to be. While I (and others) have a vision of what the US ought to be, our system allows for these differences and has a process for determining which vision (at least for a while) will be standard.