It’s an ethical dilemma tailor made for HBO’s “Curb Your Enthusiasm” and thrust into the 2016 spotlight when Hillary Clinton left an Ohio Chipotle without leaving a tip. 

When to tip can be a difficult decision, but it is especially tricky if you are running for president.

Charles Wright, the manager of the Maumee, Ohio, Chipotle, told Bloomberg that Clinton left no change in the tip jar after paying her bill, which came out to $20. 

“We get a bunch of tips,” Wright, a Republican voter, said of his store. “If we’re doing our job right, people tip.”