In US business, the bottom line is usually: Making a profit. If Martians outbid everyone else and make the part to the drawing then that's fine.
The only glitch these days comes when parts are made and assembled outside the US. For the most part, SAC farms out abroad a lot of parts but assembles the end item within its plants. Kind of a "Sorta American Made" product that keeps share holders especially happy and worker bees at a low grumble stateside.