Interesting tidbit.
There were originally 12 amendments in the Bill of Rights as proposed by James Madison. These extra 2 were never ratified by enough states.
The original first was
After the first enumeration required by the first article of the Constitution, there shall be one Representative for every thirty thousand, until the number shall amount to one hundred, after which the proportion shall be so regulated by Congress, that there shall be not less than one hundred Representatives, nor less than one Representative for every forty thousand persons, until the number of Representatives shall amount to two hundred; after which the proportion shall be so regulated by Congress, that there shall not be less than two hundred Representatives, nor more than one Representative for every fifty thousand persons.
This was intended to protect future Americans from an oligarchical elitist government. If this amendment had been ratified we would have ~6400 representatives instead of 450. (1 per 50k instead of 1 per 800k) At first this may sound ridiculous but considering the size and scope of our nation of nearly 320 million people 450 representatives sounds much more ridiculous than 450.
The original second was
No law, varying the compensation for the services of the Senators and Representatives, shall take effect, until an election of Representatives shall have intervened.
You can't vote for your own pay raise. I'm not certain but I think congress did something like this in the nineties. Of course not being part of the constitution they could change that at any time.
Edit: I think there is another way to interpret the first. We can set 1 rep per 50k and get ~6400 or we could continue the pattern: less than 100 representatives 1 per 30k, 100+ 1 per 40k, 200+ 1 per 50k...1700+ 1 per 180k meaning we would have ~1772 representatives today.