A dilemma for pro-Trump media: How to hit Facebook without dinging the president

In the alternate reality constructed by some of President Donald Trump's media boosters, the big question Zuckerberg must answer is not about privacy or propaganda but about Facebook's alleged bias against conservatives. To scrutinize Facebook on the matters of principal interest to members of Congress would be to contribute to doubts about whether Trump won on his own. So, as Zuckerberg prepares to testify before the Senate Commerce and Judiciary committees and the House Commerce Committee, pro-Trump voices in the media are obscuring the main subjects.