Working in maufacturing (Boeing) I have over the last 30 years have seen first hand why so many manufacturing jobs are moving to China and Mexico. The cost of building here, and ordering parts from domestic suppliers is going up way too fast. You can blame most of it on labor cost, unions holding a knife to the companies throat every four years, the cost of benefits including heath care. All of it contributes to the cost of the airplane we are trying to sale. Rynair a forever Boeing-only customer, and a huge one is warning us that our 737s cost too much, and Airbus who does have Final Assy in China offers a very good airplane at a lower cost. Trying to avoid moving Final Assy out of the U.S. many of out U.S. suppliers are under pressure to slash their price or the part Of the airplane they provide , big and small, will be bid out. That is the price of doibg buisness and keeping market share from slipping to Airbus. Trump's tariffs? Yea thata help. Help Boeing decide to move the entire airplane to China.