What did the District Court find in the Chromalloy case? Select all that are correct.

1 An arbitral award that was annulled at the place of arbitration can be enforced in the U.S if there are no grounds for non-recognition under the NY Convention

2 When an arbitral tribunal denies a party the opportunity to present witnesses, this constitutes a violation of U.S. public policy

3 An arbitral award shall be enforced in the same manner as if it were a decree of a court

4 the group of companies doctrine also applies in international arbitration