Most congressman are millionaires - they're not doing for the paycheck, but rather for the opportunity to get some of the gravy or to structure favorable tax liabilities. You can draw a direct line from politician, to contributor, to recipients of government funds or contracts, to the drafting of favorable legislation.
Hitler used the concept of "
The Big Lie," a lie so "colossal" that no one would believe that someone "could have the impudence to distort the truth so infamously".