Then you have another scaling problem. If you increase the number of representatives to the level at the founding of the US (1 per 30,000 or so if I recall) then you'll end up with the House of Representatives holding 11,000+ members.
Or maybe acknowledge that 300M people is a lot to have under one rule of government and split the country apart according to the most sensible cultural borders.
I reckon we start by letting Texas secede. Then we bundle up California + Hawaii into its own little pacific paradise. Then we offer all the northern border states to Canada. And offer New Mexico to Mexico...
>Then we offer all the northern border states to Canada.
Living in New England, there are actually a fair number of people here who dream of applying to join Canada or the EU if we could get free of the rest of the USA.