Some DACA recipients who received a three-year work permits must return them

If you received a letter or were contacted directly by USCIS regarding the recall of certain three-year work permits, you must IMMEDIATELY return your three-year work permit to your local USCIS office. If you fail to return your card, USCIS will terminate your DACA and all employment authorizations effective July 31, 2015.
Some new resources are available at uscis.gov including a new online tool that three-year DACA recipients can use in order to verify whether they need to return their work permit or no, a new quick facts Web page and a fact sheet which is also available in Spanish, Chinese, Korean, Tagalog and Vietnamese languages.
If you have not been contacted by USCIS and you received a three-year card after February 16, 2015, you should use the new online tool or call the USCIS Customer Service line at 800-375-5283 and select option 1 for English, then option 8 to verify whether you are affected BEFORE returning your card.