The Senate is. The House is not. The artificial limit of 435 set in 1911 has turned it into a pseudo-Senate and done a lot of harm to this country. With the same population representation as then, we should have around 1600 Representatives now.
A lot of the issues we currently have in Congress simply wouldn't exist with the House operating as it was designed.
I end up having this conversation often because I believe the Congress Apportionment Act is where we really went off the rails. With our technology, I believe we could handle 1600 representatives and they wouldn't need to be full-time careers. Would congress ever agree to repeal the act?