The ruling is the latest in a dispute between the US' Boeing and Canada's Bombardier
US trade commission blocks 300% tariffs on Bombardier CSeries planes
A bipartisan trade panel on Friday blocked the US government's decision last year to impose nearly 300 percent punitive tariffs on airplanes manufactured by Canada's Bombardier in a dispute that has inflamed relations with Ottawa.
The US International Trade Commission voted 4-0 that there was no injury to US manufacturers, which effectively forces President Donald Trump's Commerce Department to reverse course on the retaliatory countermeasures designed to protect Boeing.
Delta Air Lines placed an order for 75 of the CSeries jets, which can seat between 100 and 150 passengers, none of which have been delivered, but the Commerce Department ruled that the aircraft benefitted from unfair subsidies and were sold at below cost.