(a)The district courts shall have original jurisdiction of all civil actions where the matter in controversy exceeds the sum or value of $75,000, exclusive of interest and costs, and is between—(1)citizens of different States;(2)citizens of a State and citizens or subjects of a foreign state, except that the district courts shall not have original jurisdiction under this subsection of an action between citizens of a State and citizens or subjects of a foreign state who are lawfully admitted for permanent residence in the United States and are domiciled in the same State;(3)citizens of different States and in which citizens or subjects of a foreign state are additional parties; and(4)a foreign state, defined in section 1603(a) of this title, as plaintiff and citizens of a State or of different States.
[abridged]
[source] = Constitution