According to today's NY Times:
Earlier this year, after continuing complaints that the White House was asking litmus-test questions of nominees for scientific advisory panels, the first question asked of a candidate for a panel on Arctic issues, the candidate said, was: "Do you support the president?"
Yet, Bush claims he has no litmus test for potential judges to the Supreme Court! Can he be believed?
link for the quotation above:
http://www.nytimes.com/2004/10/19/science/19poli.html?oref=login