Thompson has supported legislation in a number of states that would ban sales of violent and sexually explicit video games to minors. In response to First Amendment concerns, he argued that the games were a "public safety hazard." However, he rejected as "completely unconstitutional" Hillary Clinton's proposed legislation to ban sales to minors of games rated "M" for Mature by the Entertainment Software Rating Board. Thompson contended that the government could not enforce a private-sector standard but had to depend on a "Miller" obscenity test. He charged that Clinton was simply positioning herself politically, with the support of the gaming industry, by proposing a bill which he felt she knew would be unconstitutional.