Btw, UBS recently changed their ToS and explicitly mark US funds (e.g. VT). That said I don’t trade with UBS so couldn’t check if they merely display a disclaimer that you shouldn’t trade it/it’s not solicitation, or if they also prevent trading.
Maybe someone trading with UBS could let us know?
Edit: I think the new ToS says
These collective investment schemes are expressly excluded from being offered in and from Switzerland and/or to nonqualified investors.
But I don’t know if they allow reverse solicitation.