They did request it multiple times. Not sure what your question is about...
About what US could do to ease current tensions, we discussed this question recently in this thread. In short, some of US analysts and politicians have decent and realistic proposals on Russian policy. Read for example this post: http://forums.civfanatics.com/threads/ask-a-russian.189262/page-17#post-14446410
and also my reply to it:
http://forums.civfanatics.com/threads/ask-a-russian.189262/page-17#post-14446656
So the US is doing some of what you want vis a vis Ukraine and you're scared of us?