No private planes. No flights or trips paid by any business, organization, other country, or private parties.
No money from businesses, persons or foreign governments.
Health care only while serving. No pension. Give them a small benefit they can invest or spend as they choose.
No fund raising except in their election year. Minimize funds from the party.
Free air time for candidates on local or state-wide tv.
No speaking honorarium while in office.
Cannot lobby for 4 years after leaving office. Cannot work for a foreign business or government for 4 years.
I'm sure there's more, but that's a start.
No money from FOREIGN businesses, persons or foreign governments.
lIMITED free air time for candidates on local or state-wide tv, WITHIN 60 DAYS OF THE ELECTION.