Complex sentence: Grünbaum was born in Denmark but Foighel Isi, who was Treasury 1982-87, was an immigrant (born in Germany) so Manu Sareen is not the first immigrant who has been minister of Denmark.
Split into simpler sentences: Grünbaum was born in Denmark but Foighel Isi, who was Treasury 1982-87, was an immigrant (born in Germany). So Manu Sareen is not the first immigrant who has been minister of Denmark.