If you are from El Salvador and currently have "Temporary Protected Status" or TPS, you may be eligible to renew that status. (This does not create any new application opportunities for people who did not already obtain TPS in the past.)
By way of reminder, TPS allows noncitizens whose countries have become dangerous, perhaps due to natural disaster or civil strife, to remain in the United States for limited time periods as authorized the the U.S. government. (For more information on basic eligibility and application procedures, see the "Getting Temporary Protected Status (TPS)" section of Nolo's website.)
It was recently announced that TPS for eligible nationals of El Salvador will be extended for another 18 months, beginning on September 10, 2013, and ending on March 9, 2015. The application period will open on May 30, 2013 and run through July 29, 2013. See the "Temporary Protected Status Designated Country: El Salvador" page of the U.S. Citizenship and Immigration Services website for detailed instructions and to download the required application form.