The Orca Responsibility and Care Advancement (ORCA) Act, introduced today, is a bill that would phase out the display of captive orcas in the United States.
Follow the link to find out more:
Update (7th November):
This article includes SeaWorld's response to the ORCA Act proposed yesterday by U.S. Congressman Adam Schiff - http://timesofsandiego.com/business/2015/11/06/bad-news-for-seaworld-congressman-seeks-to-phase-out-captive-orcas/