What is the meaning of the Eleventh Amendment and what is the effect of it?

Thus it is apparent that the literal language of the Eleventh Amendment does not control. Rather, the "principles of federalism" that inform the amendment, Dellmuth v. Muth, --- U.S. ----, 109 S.Ct. 2397, 2400, 105 L.Ed.2d 181 (1989) are what have governed constitutional meaning here. The question consequently is, "Do the principles of federalism implicit in the Eleventh Amendment indicate that the states possess immunity from suit by an Indian tribe?"