Iffy democracy

Legislation barring DP World from operating some US ports is going though tacked onto a totally unrelated bill to fund the Iraq adventure. That must be passed, of course, so the ports thing automatically goes through with it.

It's a very iffy version of democracy isn't it, when sleight of hand is perfectly legal and acceptable.

The honest thing to do would be to introduce the bill as a separate piece of legislation. Why have its supporters not done that?