I have always been somewhat curious as to where you buy your steel at and if it's imported or domestic or should I say, do you really know.
Having retired from that industry, I know where steel service centers source their materials at and how they 'fudge' the actual origin. Very easy to do today, once any steel supplier buys a master coil and processes it (level or slit or roll form the steel or any other process done here), the origin of the steel becomes blurred. Certs are translated as that blurred origin vanishes and it's replace by 'Made in America', when in fact the steel was not. Not sayin all steel is imported but a lot is and it comes from countries that sell it the cheapest.
The outfit I retired from not only purchased domestic steel but steel worldwide and I hauled a lot of it. It was all labelled 'Made in America' no matter what, when it was actually offshore material processed here.
Very few manufactures can buy direct,. not even the automotive buys direct, they all buy from various steel service centers. The only one I know of was Thyssen Krupp. They imported 100% of the cabinet grade (exterior component steel) from their German mill and levelled the coils and flat rolled them for GM and to a lesser extent, Fords.
You like to blow the horn about 'Made in America by American workers and that is all well and good and I applaud you for that but, where your materials are originating at is the question.
Every manufacturer buys on price, you do as well, but do you know where the material originated at? I don't believe you do.
Not all steel is created equal by a long shot.