[JURIST] A group of four tobacco companies sued [complaint, PDF] the US government Tuesday claiming that new cigarette labeling regulations [FDA materials] violate their First Amendment [text] rights. The suit, filed against the Food and Drug Administration (FDA) [official website] in the US District Court for the District of Columbia [official website], seeks an injunction against the new regulations, which the companies claim unconstitutionally force them to disseminate the government’s anti-smoking message. Floyd Abrams, an attorney for Lorillard [corporate website],…