Is it fair to say that trump could be correct in that it's not what Sweden expected as far a integration into society goes?
Well, "Sweden" is a country with many diverse views. I would agree that there is a growing realization that the "open border" policy in Sweden is not sustainable which is why Sweden has taken steps to close its borders, for instance by re-introducing passport checks at the Danish border.
I commend using European experience, including Sweden, when discussing immigration and it's consequences in the US. However, I don't think it supports Trumps narrative that easily (see my previous post) when you look at the actual crime statistics and know something about Sweden. It might come as a surprise but I am not particular pro-immigration from Muslim-majority countries and definitely against unchecked immigration.
The main problem re. Trump is that the things he says, like "the thing that happened the other night in Sweden", shows that he confabulate news programs with real events... that is a kind of behavior that I would be very worried about in one of my parents.