District court had subject matter jurisdiction under international convention to enforce the provisional arbitration award.
Although strict compliance with a state preemptive attachment statute would allow attachments of assets allocated by arbitration award on the understanding that they were subsequently to be converted to judgment, such a showing was not made here.
http://www.ca5.uscourts.gov/opinions/pub/16/16-30984-CV1.pdf
Since 2011. An occasional commonplacing of the U.S. Circuit Courts of Appeal.
Neither an authoritative statement of the law nor legal advice. Quick work.