The Entertainment Software Association, the lobbying group that also oversees the ESRB ratings, stated that Pennsylvania's proposed video game tax is an unconstitutional violation of the first amendment. The group argues that the tax singles out video games based on their content, violating the constitutional free speech rights of the game's publishers.
While the ability to tax violent games is not a matter of settled law, the game industry has one important U.S. Supreme Court decision in its favor. In 2011, a California law banning the sale of violent video games to children under age 18 was struck down in a decision by the Supreme Court. In its decision on Brown v. Entertainment Merchants Association, the court found that video game content was protected as free speech.