I still see gerrymandering, or discticting, as the bigger problem, and for the reasons that Dilettante has stated. The districts have the result of creating gridlock by preventing compromise.

One could readily argue that the money is the bigger issue. It's a near thing at best, which is the bigger. The US has too much gravitational pull in the world. That gravity distorts all other countries, as well as the US itself. And since politics is how that gravity manifests, it's a big deal for everybody. Little wonder there's so much money in the system.