With Congress completely stuck, the executive branch takes over a lot of functions that probably belong to the legislature. I say "probably" because the Constitution isn't really explicit about it, but it's what most people would infer.

The executive branch is less accountable than the legislative one. You elect only the top office, and only once every four years. With so much bundled into a single vote, it's nearly impossible to hold any specific action to account.

It doesn't work out great for the judicial branch, either. They often rule that a decision is based on the law as written, and it's up to the legislature to fix that -- while knowing full well that the legislature can't and won't. And they're not consistent about that; they'll also interpret a law to favor their ideology, and again Congress is in no position to clarify the intended interpretation.

Congress was deliberately set up to favor inaction, and not without reason. But that has reached the point where it practically doesn't even exist as a body, and its ability to serve as a check on the other branches has vanished, leading to even more abuses.