Both Apple and Google have root access in the devices. They do not necessarily need to do this.
My first thought is that this is looking like an especially fun (for the rest of us) popcorn session where someone in one government is shocked to discover that other governments pull the same stunts that they think should be reserved for "our people"… but then I looked up Senator Ron Wyden's Wikipedia page and he seems to be genuinely opposed to such shenanigans from everyone including the US.
So, good for him.