we were trusting that such programs would not exist here
It's still not clear what programs you are talking about. Because google provides no access logs "someone could go into our account and take confidential information, and we would never know". What does that have to do with Echelon or Prism?
My apology is really around the fact that at the time we were trusting that such programs would not exist here (this was before explained Echelon to us), and that the US didn't work that way. I was naive and I was wrong.