A search warrant can only be issued to obtain evidence of a crime. A search warrant on a newspaper would require a lot of evidence that the reporters had committed a crime. There is no way a court would have issued a warrant for what was, in effect, a "fishing expedition".
Catherine Grant offers Clark some Pinot Noir, a red wine, and says she has some chilling. She returns with two glasses of white wine. It was probably intended to be Pinot Grigio.