The U.S. Commerce Department said on Friday it has opened a national security investigation into the import of commercial ...

US Opens National Security Probe Into Imported Commercial Jets ... leased planes and deferring aircraft deliveries. Delta Air Lines is also unwilling to pay tariffs on aircraft deliveries.

Delta Air Lines is also unwilling to pay tariffs on ... Last month, the department opened a similar probe into the national security impact of imports of medium-duty and heavy-duty trucks and ...