“Boeing is signing a deal with an Iranian aviation company and an industry complicit in the regime’s weapons proliferation and destabilizing adventurism,” Mark Dubowitz, executive director of the Foundation for Defense of Democracies, a Washington-based public policy group, testified at the hearing.

Dubowitz said that Iran Air made three trips to Syria just last month carrying weapons and supplies for Bashar al-Assad’s regime in Syria that’s opposed by the U.S.

“The deal between Boeing and Iran risks implicating major U.S. companies in the Islamic Republic’s support for terrorism and regional adventurism,” said Dubowitz, who has advocated tough sanctions against Iran and helped lawmakers craft them.

Boeing’s Agreement With Iran Comes Under Congressional Scrutiny,