Sorry, this not going to help you... but I think that all American's currently in Iraq need to be investigated before being allowed back in as well. Who knows who they may have been hanging out with over there? Plus, I hear that Islam is highly contagious.
If they cannot let a 60 year old man come visit his son/daughter because he has been traveling to places 'disapproved' of, then I don't know what next.
To be fair, you only 'heard' of the possibility of problems with future visitor visa applications, and nothing has been denied as yet... but it just makes me mad that we seriously consider these things lest we make one small misstep!
I miss my dad (God rest his soul), but I can clearly see what he would have done. He was never one to put life on hold for anyone. I hope I never do, either.