The US delegation, for absolutely no technical or treaty-related reason, refuses to certify the new Tu-214, that uses the exact same digital camera as their Tu-154, used in 2017.
The U.S. is 1 of 34 signatory countries to the treaty.
The U.S. is the only country to not approve certifying the plane (without explanation) despite all technical and procedural issues being addressed.
Belarus
The French Republic
Kingdom of the Netherlands
Turkey
Belgium
The Republic of Georgia
Norway
Ukraine
Bosnia and Herzegovina
Germany
Poland
The United Kingdom
Bulgaria
Greece
Portugal
Canada
Hungary
Romania
Croatia
Iceland
The Russian Federation
(con't)
Italy
Slovakia
Denmark
Latvia
Slovenia
Estonia
Lithuania
Spain
Finland
Luxembourg
Sweden
Votes against certifying the new Tu-214 with the same digital electro-optical sensor as they have been using for years:
The United States of America.
The United States was 1 of 23 countries taking part in the certification of the Tu-214ON (not all 34 were taking part in the certification). The US was the only voice of dissent, and so far doesn't know why. They gave two weeks to make something up.