The Public Interest Legal Foundation (PILF) is an American conservative legal group based in Indianapolis, Indiana, which is known for suing states and local governments to purge voters from election rolls. The nonprofit was constituted in 2012 to “assist states and others” to fight “lawlessness" in American elections. PILF asserts that "large numbers of ineligible aliens are registering to vote and casting ballots", although lists that they have displayed of such supposed voters prove to actually include American natives who are eligible voters. PILF said their lists had been based on state government lists of declared “non-citizens” removed from local voter rolls. Some U.S. citizens were wrongfully purged in the process. The group has made false claims about the extent of voter fraud in the United States, and the organization has published the information of eligible voters online, including Social Security numbers, falsely accusing them of being fraudulent voters.

Yusuf Islam (born Steven Demetre Georgiou; 21 July 1948), commonly known by his stage name Cat Stevens, then Yusuf Islam, later simply Yusuf and eventually Yusuf/Cat Stevens, is a British singer-songwriter and multi-instrumentalist. His musical style consists of folk, pop, rock, and, in his later career, Islamic music, before returning to secular music in 2006. He was inducted into the Rock and Roll Hall of Fame in 2014. His 1967 debut album and its title song "Matthew and Son" both reached top ten in the UK charts. Stevens' albums Tea for the Tillerman (1970) and Teaser and the Firecat (1971) were certified triple platinum in the US. His 1972 album Catch Bull at Four spent weeks at the top of several major charts. He earned ASCAP songwriting awards in 2005 and 2006 for "The First Cut Is the Deepest", and the song has been a hit for four artists. His other hit songs include "Father and Son", "Wild World", "Moonshadow", "Peace Train", and "Morning Has Broken". In December 1977, Stevens converted to Islam and adopted the name Yusuf Islam the following year. In 1979, he auctioned all of his guitars for charity. He has since bought back at least one of these guitars as a result of the efforts of his son Yoriyos, and left his musical career to devote himself to educational and philanthropic causes in the Muslim community. He was embroiled in a long-running controversy regarding comments he made in 1989 about the death fatwa on author Salman Rushdie. He has received two honorary doctorates and awards for promoting peace as well as other humanitarian awards. In 2006, he returned to pop music – releasing his first new studio album of new pop songs in 28 years, entitled An Other Cup. With that release and subsequent ones, he dropped the surname "Islam" from the album cover art – using the stage name Yusuf as a mononym. In 2009, he released the album Roadsinger and, in 2014, he released the album Tell 'Em I'm Gone and began his first US tour since 1978. His second North American tour since his resurgence, featuring 12 shows in intimate venues, ran from 12 September to 7 October 2016. In 2017, he released the album The Laughing Apple, now using the stage name Yusuf/Cat Stevens, using the Cat Stevens name for the first time in 39 years.