It seems 7 US states banned tipping as un-American. The all repealed by 1926.
The Case Against Tipping states that:
Tipping did not take off in America until later, possibly because the
country did not have a servant class. In the late 1800s, affluent Americans
who traveled (and tipped) in Europe, began tipping in the United States as
well, to show that they had been abroad and were familiar with European
customs. At first this was met with fierce opposition as fostering a
master-servant relationship ill suited to a nation whose people were meant
to be social equals. People opposed tipping so strongly that, between
1909 and 1918, seven states passed anti-tipping laws. All these laws,
however, were repealed by 1926, when the concept slowly took off.
Business owners began to lower the wages of employees until tips were
needed to supplement their income, and people became accustomed to the
practice as a way to ensure the livelihood of workers in the service
When tipping was considered deeply un-American
The tipping abolitionist campaign came to a boil in 1915, when three states (Iowa, South Carolina and Tennessee) passed anti-tipping laws, joining three other states (Washington, Mississippi, and Arkansas) that had already passed similar bills. Georgia soon followed. By 1926, however, all these anti-tipping laws were repealed, writes Segrave, largely because it was seen as futile to police something that had gained a momentum of its own.