The US market just seems to be a low priority for them, even with many of their new crossovers. Very odd considering their popularity and success. I can understand their hesitation with a sedan since sales have been sliding for years now.
If you consider the huge drop off in sales both the Passat and Jetta have seen over the past few years, its obvious why they are shifting focus to crossovers and EV's. The Arteon might be one of the last great touring cars we see from VW.