This was already tried in the 70s and it sucked[1] so much so that we went back to the current method. It's strangely hard to find references though.
[1] https://www.mercurynews.com/2016/10/30/the-year-daylight-sav...
[1] https://www.mercurynews.com/2016/10/30/the-year-daylight-sav...
There's still not much on the US domestic terror attacks (100s/yr), during the early 1970s. That one has a vibe, as if no one wants to discuss it.
[1] https://www.fbi.gov/history/famous-cases/weather-underground...
The last 20 years of terror hysteria created a false mindset that Americans are at meaningful risk of dying in a terror attack. Trillions have been wasted on infrastructure - that can only be responsibly explained as a tool to nurture and reinforce that mindset.
And of course there are the ever increasing loss of civil liberties, each loss shifting power toward Gov and away from us.