<P> The State of Florida's interior design practice regulations were the subject of a lawsuit by the Institute for Justice, a non-profit libertarian public interest law firm in the United States . The judge in the case struck down the reservation of the title "interior designer" for registrants in the state on First Amendment grounds and the reserved title for registrants has been changed to "registered interior designer ." The practice regulations for commercial interior design were left in place . The judge acknowledged that the existing law already protected the ability for any individual to practice commercial interior decoration </P> <P> A title restricts the use of the title as defined by that jurisdiction, with titles varying by jurisdictions and precedence in that jurisdiction . The titles currently in use are, "certified interior designer," "registered interior designer," and "licensed interior designer". The titles are restricted to be used only by those who have satisfied minimum competency requirements and accept the accountability required by the government in a regulated profession . </P> <P> Currently, 19 states have regulation which allows the practice of interior design, but restricts some form of the title to those licensed and regulated persons . </P> <P> On February 4, 2010, judge Robert Hinkle ruled in that in the state of Florida it is unconstitutional to prohibit the use of the title, "interior designer," "registered interior designer," or "words to that effect" to those not registered . </P>

What states require interior designers to be licensed