My understanding is that there are a few factors, but two of the dumbest are the "chicken tax", which is a 25% tariff imposed on imported light trucks, and the

My understanding is that there are a few factors, but two of the dumbest are the "chicken tax", which is a 25% tariff imposed on imported light trucks, and the CAFE standard calculation for allowable miles per gallon without paying a fine. That calculation has a bug that makes it so the larger your vehicle footprint, the fewer miles per gallon your vehicle needs to output to qualify. So, perversely, it ends up punishing smaller vehicles and rewarding giant trucks, which is not what it was supposedly intended to do. It seems like being all-electric should get you around that mileage requirement, so it's possible that that last one is not as much of a factor. But that is the conventional wisdom about why they won't sell an actual compact truck in the U.S. market, despite the fact that all those old Toyotas and Rangers from the 90s are still being kept on the road because people love them.