Photo Illustration by Luis G. Rendon/The Daily Beast/GettyPay Dirt is a weekly foray into the pigpen of political funding. Subscribe here to get it in your inbox every Thursday.Once upon a time, Sen. Kyrsten Sinema (I-AZ) crusaded against politicians cashing in on perks of their office.In 2018, as a U.S. House member and Senate candidate, Sinema co-wrote a bill seeking to crack down on lawmaker use of public funds for “first class air travel,” among other luxuries.“Arizonans are sick and tired o