Wallnau is a board member for the Oak Initiative, a group listed by the Council on American-Islamic Relations as, quote, part of the Islamophobic network in America.

In 2011, the Oak Initiative published a book called Islam vs. the United States, which purported to expose the quote, all-conquering character of many of the followers of Islam.

The Oak Initiative is also fiercely anti-LGBTQ. And in 2015, they paid to erect billboards in Michigan that depicted a gay man with a rainbow painted on his face, accompanied by the text, not born this way, and quote, homosexuality is a behavior, not a civil right.