Subject to existing international agreements to which the United States is a party at the time of enactment of this Act the property in the United States of a foreign state shall be immune from attachment  arrest  and execution except as provided in sections 1610 and 1611 of this chapter.
28 U.S. Code § 1609 - Immunity from attachment and execution of property of a foreign state
 So in original. Probably should be followed by a comma.
References in Text
The time of enactment of this Act, referred to in text, probably means the time of enactment of Pub. L. 94–583, which was approved Oct. 21, 1976.
Statutory Notes and Related Subsidiaries