GMB was banned a little over a month ago for refusing to cease certain patterns of behavior, despite several warnings.
Now, as for the Op's question: It would certainly be irrelevant and completely unenforceable in 1789. Heck, the U.S. barely had hte navy to enforce the doctrine until the later part of the 19th century. Theres really no reason for it to be a part of the constitution, or plausible circumstance under which it would get in there - but if it does, Britain and the other European powers just say "aww, isnt that cute," and go on their merry colonizing way.