Can you point out where you’re seeing the cap based on space? I read your article and it looks like it was capped due to the 1929 Permanent Apportionment Act.

In fact, until the House was capped at 435 seats2 by the 1929 Permanent Apportionment Act, each apportionment period was regularly accompanied by clashes over how to best divvy up political power in Congress — including the size of the House.