On May 15, 2007, two advocacy groups requested a temporary restraining order from the US District Court of the Northern District of Texas in an effort to block an anti-illegal immigration city ordinance passed in Farmers Branch, Texas. The ordinance was scheduled to go into effect that same day after being approved by voters the week prior. The ordinance required apartment renters to demonstrate proof of US residency and penalized landlords who rented to undocumented immigrants with a $500 fine. The ordinance was originally scheduled to go into effect in January 2007, but was delayed due to a previous challenge. In March 2012, the US Court of Appeals for the Fifth Circuit upheld the district court's ruling that the ordinance was unconstitutional.