What’s it to him that they keep working on it? So some computer nerds in the government keep chasing their own shadows, so what? Why would the President of the United States order the stand down?
Yeah. We know why.
Obama cyber chief confirms 'stand down' order against Russian cyberattacks in summer 2016
Obama bent over backwards not to appear to be targetting the Trump campaign, and admits that not wanting to alarm the American public about this or trying to frighten the American public kept him from doing more. I'm far less concerned about what happened, since we cannot change the past, only learn from it.
Since the 2016 election, what has the Trump Administration done to prevent the Russians, or others, from doing the same thing in 2020, and the answer to that question would be "absolutely nothing". Just the opposite. Trump has cut funding to the agencies fighting Russian interference, while openly inviting foreign interference from the Ukranians, the Chinese, and the Russians.