Some states already have. https://www.cnn.com/2020/10/03/cars/california-2035-zev-mandate/index.html
The internet is a series of tubes. In all seriousness, the internet is a bunch of layers of protocols, each being controlled by big entities due to the nature of systems of scale. They're being targeted by the leftist mob.
It's a coordinated gaslighting technique. The only way to combat is to call them racists and call them communists. If you constantly defend yourself, denying their claims, they are always on the offense. Psychologically it is a terrible thing, it will make you question whether or not what they are saying is true or not. Why would they be saying it otherwise?
Doesn't matter. They're too big. Ground units are good because their mobility allows them to conceal themselves. A mech would never be able to conceal itself, even with a reduced radar signature, it would have to hide in a giant gave or something. Not only that, it would be incredibly slow, too slow to dodge any missile.
If the liberals have it their way, the entire country will follow suit.