More than 1,000 people, many of whom are University of Pennsylvania Law School students and alumni, have signed a petition calling for professor Amy Wax to be relieved of her teaching duties. The outcry comes after she reportedly told attendees at the National Conservative Conference this week that the United States should favor immigration from Western countries over others.

According to news reports—the accuracy of which the law professor disputes—Wax attributed an increase in litter to immigrants and said the country would be “better off” with more whites. In addition to the demand that Wax no longer teach, the petitioners have asked the school to denounce her latest comments and hire more minority professors into tenured positions.