Yes; I remember first hearing that US-ers use 'Polish' as we [reprehensibly] use 'Irish' in this way, from Heather Woods, ex-Young·Tradition, who has lived in NY for years but was on a visit over here. Likewise they tell Polish jokes as we tell Irish jokes. Her example, which will approx date this telling, was --

A man was found dead at the bottom of the Grand Canyon wearing roller-skates. The police were baffled till they found that his name was Evel Kowalski.

~M~