Sandra Day O'Connor,
Tafflin v. Levitt — Opinion of the Court
“ As we stated in Gulf Offshore:"In considering the propriety of state-court jurisdiction over any particular federal claim, the Court begins with the presumption that state courts enjoy concurrent jurisdiction. Congress, however, may confine jurisdiction to the federal courts either explicitly or implicitly. Thus, the presumption of concurrent jurisdiction can be rebutted by an explicit statutory directive, by unmistakable implication from legislative history, or by a clear incompatibility between state-court jurisdiction and federal interests." ”
