http://www.snopes.com/politics/bush/laura.aspClaim: While a teenager, future First Lady Laura Bush caused the death of a classmate in a car accident.
Status: True.
Examples:
I heard at a party last Saturday that Laura Bush, at age 17, ran a stop sign and crashed into another car, killing a 17-year-old classmate.
I heard a rumor this past weekend concerning our First Lady, Laura Bush, to the effect that she committed manslaughter at one time by backing over her boyfriend with her car.
Origins: Driving is one of the most dangerous activities we engage in, and most of us do it every day, little realizing the peril of it. Every year in the U.S. there are approximately 6.5 million traffic accidents, resulting in about 42,000 fatalities.
This is the story of one of those accidents. It resulted in the death of someone you've never heard of, at the hands of someone you have.
In May 2000, a two-page police report pertaining to a fatal accident that had taken place near Midland, Texas, in 1963 was made public. It Laura Bush contained the information that 17-year-old Laura Welch had run a stop sign, causing the death of the sole occupant of the vehicle hers had struck. According to that report, the future First Lady had been driving her Chevrolet sedan on a clear night shortly after 8 p.m. on 6 November 1963 when she entered an intersection without heeding the stop sign and there collided with the Corvair sedan driven by 17-year-old Michael Douglas. Also in the car with Laura Welch was a passenger, 17-year-old Judy Dykes.
How fast Miss Welch might have been driving is open to question. That part of the police report is illegible, although two biographies of the First Lady refer to her as having been going 50 mph at the time of the collision. The speed limit on that portion of road was 55 mph. According to the police report neither driver had been drinking, but no tests were performed. No charges were filed as a result of the accident.
snip........
There has always been speculation about the nature of his relationship with Laura Welch. One rumor asserts the two had never dated, but that Laura had been romantically interested in him. Another claims he had been Laura's boyfriend when he died, and another that he had once been her boyfriend but the couple had subsequently broken up. (The latter theory is advanced in the 2002 biography of the Bushes, George and Laura: Portrait of an American Marriage, which states Laura Welch and Michael Douglas had dated throughout early and mid-1963, but by the fall of that year Michael was going out with Regan Gammon, one of Miss Welch's closest friends.)
Continued at above link