Where are you seeing the marines where deployed? I am reading they were put on alert status, which is not the same.

I would imagine this is being done as a signal to the state of California not to incite insurrection or the Insurrection Act could be invoked.

I’m not making a judgment about the morality or correctness of the current federalization of the national guard, but we need to make sure we are not spreading misinformation at such a time and sticking to facts.

Edit:

I did just find this, so it seems they are being integrated somehow. So then yes, not clear how this would be legal:

https://www.northcom.mil/Newsroom/Press-Releases/Article/421...