OK- Correct me if I am wrong.
You fear they will be appreciated in the future, menaing they are not appreciated now. You see it as bad that they are not appreciated now. You don't actually fear thet the President will be credited in the future with accomplishing something.
You mean "reproach" in an idiomatic sense, not literal.
He (our president G. W. Bush) will be even more appreciated in the future, but I would be a happier person if he were to know today how much his work is appreciated without the benefit of hindsight.