Fox recently stopped allowing live streams of Fox News to be streamed to Roku devices in the US unless you have a paid subscription to a provider carrying Fox News. This is Fox's decision and Roku has nothing to do with it.
Do you have a paid cable/satellite/etc account that carries Fox News?
- Roku Streaming Stick +, 3810X, Ser YH0059427035, wifi - Samsung UN55ES6100
- Roku Streaming Stick, 3600X, Ser 5S56D8240827, wifi - JVC EM37T
- TCL Roku TV 43S425/C107X, Ser X000001R60KV, wifi