On 30 April 2010, President Barack Obama ordered the federal government to hold the issuing of new offshore drilling leases and authorized the investigation of 29 oil rigs in the Gulf in an effort to determine the cause of the disaster.[268][269] Later a six-month offshore drilling (below 500 ft (150 m) of water) moratorium was enforced by the United States Department of the Interior.[270] The moratorium suspended work on 33 rigs,[270] and a group of affected companies formed the Back to Work Coalition.[271] On 22 June, a United States federal judge on the United States District Court for the Eastern District of Louisiana Martin Leach-Cross Feldman when ruling in the case Hornbeck Offshore Services LLC v. Salazar, lifted the moratorium finding it too broad, arbitrary and not adequately justified.[270] The ban was lifted in October 2010.[citation needed]