http://www.spokesman.com/stories/2008/aug/01/bush-aides-subpoenas-upheld/
This article is two months past the original ruling, so the Bush Admin was supposed to comply with this ruling, and I can’t find anything to say they did not or did....you may ask your congressman, since the question applies to Obama WH now.
The Bush ruling would have been a precedent case for the current ruling, so Obama WH should be told to comply.
Meirs and Rove both did testify in 2009. Key parts of the transcript here. So there is not only legal precedent, there is a history of compliance.