Jhoon
Spontaneous Mishaps and Hijinks
All the cars are electric cars, so this world already seems to care more about climate change than our own world.
In the movie we saw Dr. Manhattan killing half of Vietnam all by himself. Maybe the Millennium Clock is all about launching an inter-dimensional attack on Dr. Manhattan in order to get revenge for Vietnam? She needs a Dr. Manhattan killing weapon, along with the ability to generate some kind of "tachyon" field to block his ability to see the future.
If that's her plan, she might be working with the Russians on the Intrinsic Field Generator that the reporter was asking the Senator about.
but why?