Discussions that have going on for ages have maintained that Boeing needed engineering souls for the NMA and Embraer has manpower available. In addition Boeing has worked with Embraer on the KC390 and even though this only involves the commercial side, Boeing is able to market the KC390. This has always made a lot of sense with the increasing competition from Russia and China. Wouldn't be surprised to see 737s or even the Dreamliner built in Brazil to steer clear of the USA idiocy.