Hello independent_thinker2002, I'm curious why you would think that? I agree that children of adoption have a right to find out about their past but why would you have a right to contact if the other party doesn't wish it?
It's not a right available to any other citizen that I'm aware of - if a non adoption child and parent become estranged and the child (whether adult or not by now) wishes contact then that cannot be enforced - so why in the case of an adoption child?
By "contact" - I mean something beyond the first letter or phonecall saying "hello, I exist and have found you - would you like to talk?." That's as far as it goes in my book. I'm actually in a situation like this where one of my students tracked her estranged father down from his facebook profile. He wants the contact (which is why he created the facebook account) and she's hunted him for 3 years and is contemplating her first letter. When she told me of her anger he hadn't come for her I explained he had no rights and she is now having a rethink of all the pent up anger she's had.
Both people have a right to privacy if the first meeting does not go well I'm afraid and that's what I've told her.