The road out of Congress may feel different for every member, but as former Rep. Tom Petri candidly put it, there aren’t too many ways to make an exit. “One is die, another is being defeated and then a third is retiring, and I thought that seemed like the best of the alternatives,” the Wisconsin Republican says.

Gasoline prices may vary wildly, but most gas taxes hardly ever change. According to a report released this Monday by the Institute on Taxation and Economic Policy, 22 states have raised their gas tax in more than a decade and 16 have gone longer than two decades since their last increase.