The U.S.
Supreme Court on Monday rejected a free speech challenge brought by a trade group against a regulation issued by the
California city of Berkeley that requires cell phone retailers to tell customers of certain radiation risks.
The justices left in place a July 2019 decision by the San Francisco-based 9th U.S. Circuit Court of Appeals that refused to block the 2015 regulation that industry group CTIA appealed.
CTIA said the regulation violates the First Amendment to the U.S. Constitution, which protects free speech rights, because the government, without the necessary justification that supports other types of regulations, is forcing retailers to spread a message they disagree with.