Comment by krapp

They're referring to the recent decision which reversed the Chevron doctrine, which allowed courts to defer to the interpretation of ambiguous regulations by regulatory agencies. The most common interpretation of this decision is that it has the effect of nullifying the ability of regulatory agencies to regulate, and removes the bulk of their former role to Congress.

Here is a lengthy HN thread about it: https://news.ycombinator.com/item?id=40820949