Even standard airplanes, not just Boeing, nowadays have a lot to do with int trade. Evewrything nis not made here anymopre and customers are not just local. A small segment , but most gliders and many acro planes are foreign. Also avionics ,instruments. tiress.
Trade agreements may affect labor rates and labor is a big part of airplane costs.
And thanks for those who have given their best answer, or tried to.