[1] https://www.vox.com/2018/6/4/17417452/congress-representatio...
Even at 435, unless your rep is a senior member with some important committee assignments and they happen to be in the majority party, getting the ear of your rep isn't worth all that much.
The real solution being to devolve more power to state legislatures with on-the-ground familiarity with local issues, since it's actually quite easy to get the ear of your _state_ representative.
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Wait, you mean more reps results in less value in buying them? Sign me up for that plan!
Bottom line: More, and less powerful, reps means more diverse representation, and less power to abuse. Win-win.
I understand where you are coming from as the US is so homogenous now thanks to 250 years of interstate population movement that the delineations seem arbitrary and unfair, but they were very distinct separate regions once upon a time and looking forward the regions we hope to bring into our union are more different than the average American than similar so these same protections will be critical to the effort.
Really though, appealing the logic used 250 years ago is not very convincing. We have different concerns today than we did in in the 18th century. We are not trying to convince a ragtag group of states to form a union, the union has formed and is unlikely to disintegrate. Today we have a problem of bad representation in Congress, and it has been getting worse and worse with each passing year. It is not just about state borders, it is also a problem of how districts are drawn within states, and a proportional system would address that as well (why should we ever talk about gerrymandering? it is an artificial problem that can easily be solved). Year after year a majority of Americans have watched as people the party they voted against somehow took power, kept power, and received just enough power to prevent widely supported initiatives from going anywhere. The trend has been getting worse and worse as Republicans from sparsely populated states have become more and more aggressive at pressing their structural advantage. That needs to be addressed before people start questioning the value of democracy itself.
First, it puts the balance in the house in the hands of the campaign managers for president (or whichever "vote totals" you would prefer to go by) second, it entrenches the 2 party system as a de jure institution. Third, while districts are drawn very much arbitrarily (and in many cases against the interests of the people in them a la gerrymandering) people do have more in common with neighbors than simple party members from the other side of the country. A republican and a democrat in the 6th district have more in common than two republicans, one from Maine and one from Louisiana. Your proposal eliminates representation of community interests and elevates party interest above all else. It also severely damages the check the house can have on the president since whichever party wins the presidency also wins the house.
A better solution is this solution https://en.wikipedia.org/wiki/Congressional_Apportionment_Am... thankfully it has already been passed by congress and is awaiting state ratification. It would ensure that each representative represents the same number of people but it would still preserve community interest representation and probably strengthen it and make party interest an afterthought in the house.
Then, the academic cases, wouldn't a body like that make it more likely to have other parties have a larger role in national politics?
I'd say since the house is supposed to be a democratic institution, the only one in the federal government, making individual members less powerful is a good thing. If the body is supposed to represent the population directly, the less powerful each individual is in the body the less oligarchic that body will be.
Interestingly this amendment was passed by congress with the bill of rights with no expiration and is still waiting before the States for ratification. So it does not require Congress to act, only many of the states. Another amendment passed with the bill of rights was ratified in 1992.
It would guarantee that all congressional seats on congress represent an equal number of people, thus making the house of representatives a truly democratic institution. It would make house representation a more local enterprise and reduce the effectiveness of gerrymandering. The downsides are of course that there would be thousands of representatives and the capitol would then need to be rebuilt or some other mechanism created for house and joint sessions.
https://en.wikipedia.org/wiki/Congressional_Apportionment_Am...
Changing the size of the House can be done through normal legislation after a Census.