1. Make it a felony with minimum 5 years in prison for politicians to make false campaign promises.
2. Make it a felony with minimum 10 years in prison for a politician to lie to the public, take bribes, cut deals with lobbyists, insider trading, or introduce pork into a bill.
3. Make it a felony with life in prison for any politician to say anything negative against any other politician, unless it is to point out violations of 1 or 2 above.
If these could be done, everything else will work itself out.