No only customs or something like the Department of Trade in the originating country can stop a shipment.
I am unpleasantly surprised by the lack of knowledge of our congresscritters, and many of the talking heads.
Where was all of this opposition to China getting involved in our ports, and in the Panama Canal? And to learn now that the Saudis are involved, too?
I wonder how much of this 'opposition' to the UAE is intended to hurt the economy, and how much is to beef up the unions.