Im inclined to say colorado, because colorados high altitude/above the treeline/snow capped peaks are the closest match to the alps.
Ive been lucky enough to ski at both zermatt (switzerland) and les arcs (france), and the mountains there are thousands of meters above the treeline.
The top half of mountains like breck and copper are way above the treeline and they remind me of the alps.
Tbs the canyons resort in utah is one of my favorites.