Being moderate doesn't mean not having an opinion, it means that you're willing to accept the possibility that someone else may have a valid point of view instead of just saying "fuck you, you're not on my team so you're an idiot". Instead of being whiny bitches saying it's my way or no way there are some people willing to negotiate and each make concessions for the greater good. A large number of the founding fathers were strongly against slavery and wanted it to be banned, but a large enough number of them had a vested interest in keeping slavery legal. Instead of all of them saying fuck it and walking away (like politicians do today), they compromised and left slavery legal for the time while still giving blacks partial personhood. This sounds fucked up but before being counted as 3/5 of a person they weren't even acknowledged as being people, so this was a huge step. This was a moderate political action. I'd also be interested in seeing ANY form of proof that working across the aisle means growth of government, to the best of my knowledge it is almost always a response to a national security or economic crisis that gets railroaded through congress by whoever is in the majority.