Volokh's article about "The Commonplace Second Amendment", was cited by Supreme Court Justice Antonin Scalia's majority opinion in the landmark Second Amendment case of "District of Columbia v. Heller", and he has been quoted in the media on gun laws. Volokh advocates free speech on campus, religious freedom, and other First Amendment issues, and has been widely quoted as an expert. He opposes affirmative action, having worked as a legal advisor to California's Proposition 209 campaign. Volokh is a critic of what he sees as the overly broad operation of American workplace harassment laws, including those relating to sexual harassment.