. . .at least that's what it's been in my experience.

As virtually all roads in the USA are crowned in their center so water will run off, the slight slope to the sides means when in the right lane, we have to put a bit of left rudder on the steering wheel to keep the car going straight.

A good way to check steering wheel alignment is to find a remote stretch of two-lane road that's smooth and level, then go straight down the middle of it with each side's wheels in their own lane; left side in the opposite direction lane. Then check where the steering wheel sets with the car going straight down the road.

If the steering wheel is not straight while driving well centered on the crown of the road, then take it back to whoever aligned it and politely ask them to correct it. I did this with our S80 a few months ago and the tire shop who aligned it before agreed that a slight adjustment was needed. They said I should drive down a particular nearby three-land one-way street in the middle as that their crew uses to check steering wheel alignment. I did and the S80 was perfect. A few days later, I took our other two vehicles down the same street and they also were just fine.

I don't mind a bit of left steering going down the right side of the road because every time I start to think about it, I find a one-way two- or three-lane road, then go on its left side and notice I have to use a bit of right rudder to go straight.