Banco Nacional De Cuba v. Sabbatino

The question which brought this case here, and is now found to be the dispositive issue, is whether the so-called act of state doctrine serves to sustain petitioner’s claims in this litigation. Such claims are ultimately founded on a decree of the Government of Cuba expropriating certain *401property, the right to the proceeds of which is here in controversy. The act of state doctrine in its traditional formulation precludes the courts of this country from inquiring into the validity of the public acts a recognized foreign sovereign power committed within its own territory.

I

In February and July…