A trade bill with a lot of krap in it? No problem. You just get the krap out of it with amendments.
A fast-track bill? Sure, on some things.
A trade bill with a lot of krap in it PLUS a fast-track bill? Big, big problem.
Like alcohol and driving. Each one is fine on its own. And it’s important to know the difference and not do them both at the same time.
You can’t put in amendments, that is the point!