Gipper I think the problem may be in our definitions due to different cultures. In Australia Millionaires would not be elected. When one offer himself as a candidate to the opposition conservative party he was rejected. The opposition leader knew his money would lose votes. That is not apparently the problem in the USA where you have elected mostly millionaires to be President.
I am not sure what you mean by big Government. You can not mean one with regulations because you do say government "must follow the rule of law". Laws and regulations make for bigger governments. Even safeguarding individual liberty need regulations.Even a conservatives have regulations. I want regulations that help the poor as well as the rich. We have minimum wages, safety regulations, maximum hours of work .We also have rules limiting the power of governments , big corporations and unions. We support the Middle class and small business.