US Secret Service: Will they investigate Fox News Channel?

I wonder if anyone has asked the Secret Service about possible threats coming out of FNC? With the talk show hosts blaming President Obama for all the ills of the country, isn't FNC fanning the flames of discontent in the country? And by doing so, aren't they threatening the White House? Shouldn't the Secret Service and FBI arrest the FNC show hosts? I would love to see the G Becks of the world arrested. If he is truly a journalist, let him prove it. All I hear from him is 'hate' 'hate' 'kill'. And I am sure many others get the same message. Isn't it time to shut him and them down? Free speech should not be protected when it advocates violence or the overthrow of a legitimate government. FNC should be held accountable for its advocacy of violence.