Split California

It makes no difference to me if California is allowed to split and become three (or two) states. The only impact on the rest of us would be the makeup of the enlarged U S Senate. And it would surprise me if the Republicans actually gained from such a change.
 50 states is already too many. Makes for too much diversity in regional laws and expectations. Things like air pollution don't stop at a state's borders. And one elephant in the room is the "unit rule" that large, powerful states like CA, TX, and NY love for supposedly increasing their influence in presidential elections. If Electoral College votes more closely resembled popular votes nationwide, then it wouldn't matter much how people wanted to carve up the nation in terms of separate state governments. Abandoning the unit rule would allow more appropriate democracy.