Fox News Admits Bias To Attack Media Matters?

Fox news may have walked out on this an egg on it's face- Embarrassing  Video

A spate of recent Fox News attacks on Media Matters tax-exempt status for partisanship included one last week with Steve Doocy interviewing Jordan Sekulow of the American Center for Law and Justice that not only relied on an argument that assumes Fox News is an arm of the Republican Party (which could have legal consequences for Fox), but also came from a guest whose own 501(c)(3) tax-exempt organization has problems with partisanship as this show in this video.

Now how is Fox News a legitimate news channel?