Why permanent daylight saving time has failed in the US before

Permanent daylight saving time has moved closer in the U.S. after the House passed the Sunshine Protection Act, setting up a potential vote by the Senate and a possible signature by President Donald Trump. If enacted for non-exempt states, clocks would stay on daylight saving time year-round, meaning they would not be set back an hour in November when the law takes effect. The article notes that the U.S. has repeatedly changed its approach: daylight saving began in 1918 for one year, returned during World War II in 1942, was standardized by the Uniform Time Act in 1966, and then shifted again in 1973 to year-round time during a national energy crisis. After initial approval near 80% in December 1973, support fell to about 42% by February, as children headed to school in morning darkness, including reports of crashes linked to the schedule; Florida recorded eight fatalities, according to the piece. The Department of Transportation found no clear evidence of an accident link and estimated energy savings of only 0.4% to 1.5%. The article also cites health experts who argue permanent standard time would improve morning light and circadian alignment.