With Season 3 over and the prevalence of union strikes in the American film and tv landscape, I've decided to use this break to give a brief overview as to why composers in the US don't have a union (unlike almost everyone else in the industry). There's a little history in here, a little legal discussion, and some conjecture and opinions I've picked up from composers lately. That said, I've tried to keep my own opinion out of this (and this certainly isn't legal advice).
Keep in mind that I've simplified a number of the concepts. For instance, more factors go into the work-for-hire analysis to determine whether something falls into it, but that broader discussion would be beyond this brief episode.