On public land, yes. As long as you aren't like skiing through grazing allotments or fences.
I know people do it on the slopes of Mount Porte Crayon in West Virginia. They were going to make it a ski resort (the nearby hills have two actual ski resorts), but didn't, so it is public land and obviously ungroomed but I saw a youtube video where they climb up on skis and then ski down. It can be done if you have interest.
It's one of the steepest slopes around.
https://youtu.be/Ip9O16cwAwM 
