As a reminder, starting on February 21, 2017, USCIS will only accept the December 23, 2016 edition of Form I-924 (Expires 12/31/2018). USCIS will no longer accept the March 18, 2015 edition of Form I-924 (Expired 03/31/2016) after February 20, 2017.
All I-924 applications postmarked December 23, 2016 or later must include the new filing fee of $17,795 or the application will be rejected. Please see the USCIS website for the new Form I-924 and for further information: https://www.uscis.gov/i-924