> On 10 January 2018, the Canadian government filed a complaint at the World Trade Organization against the US.
> On 26 January 2018, the four USITC commissioners unanimously determined that US industry is not threatened and no duty orders will be issued, overturning the imposed duties. The Commission public report was made available by February 2018. On March 22, Boeing declined to appeal the ruling. While the USITC had determined there was no threat, the ruling came too late for Bombardier, as the dumping petition by Boeing had already paved the way for Bombardier to relinquish a controlling interest in the CSeries to Airbus in October 2017.
This is just a repeat of the Avro Arrow story. US demanding free trade from everyone and then just bullying its weight around when someone comes along with a better deal than what they can manage.