I'll give you an example:
49 CFR Part 581, "The bumper standard," prescribes performance requirements for passenger cars in low-speed front and rear collisions. It applies to front and rear bumpers on passenger cars to prevent the damage to the car body and safety related equipment at barrier impact speeds of 2½ mph across the full width and 1½ mph on the corners.
This is equivalent to a 5 mph crash into a parked vehicle of the same weight. The standard requires protection in the region 16 to 20 inches above the road surface, and the manufacturer can provide the protection by any means it wants.
Now ask yourself. Why the fuck is the federal government telling auto manufacturers that they need to sell cars with bumpers that can take a 2.5 mph impact without damage? Where's the threat to safety there? Who are they protecting with that law? You?
Simply put, they are pandering to the insurance companies so they pay out fewer "fender bender" claims. It's pandering to a lobby group.
(Canada is worse, they have a 5 mph bumper standard. It so bad that the Ford Thunderbird isn't delivered with fog lights in Canada because they can't hold up to the bumper test....)
This is one of the reasons why you sometimes see really cool sports cars available in Europe, but not here.
The Ferrari F430 was almost banned from the US for sale this year because it's airbags didn't provide sufficient protection for some smaller women and children in abnormal seating positions... Seriously.
In the end the US government cut them an exemption for 2007 and 2008, but you get the idea.