Melville Fuller,
Southern Kansas Railway Company v…
“ It is true that, apart from jurisdiction over the subject-matter, a citizen of a territory cannot sue a citizen of a state in the courts of the United States, nor an Indian tribe or nation sue a state or its citizens, but the judicial power extends to all cases, in law and equity, arising under the laws of the United States, and this case falls within that category, and therefore the jurisdiction in question could be conferred, as we hold that it was. ”
