I'll see if I can find the link that I gleaned this from.
Here is the quote about the issuing of a search warrant..
The article is hereQuote:
“Under both state and federal law, a search warrant may not be validly issued to confiscate the property of a journalist,” she wrote in a letter to San Mateo County, Calif., authorities on Saturday. “Jason is a journalist who works full time for our company,” she continued, adding that he works from home, his “de facto newsroom.”