Litigation may not be a good remedy in adjustment of status delay or I-140 delay cases or other matters where USCIS is permitted to exercise discretion. For an assessment of your case, please feel free to consult us. However, generally an immigration applicant may be able to seek judicial remedy to expedite his or her long pending application/petition with the USCIS by way of filing a Writ of Mandamus.
Immigration Law :
Unless the context shows otherwise, all answers here were provided by Rajiv and were compiled and reported by our editorial team from comments and blog on immigration.com
See clip from Attorney Rajiv S. Khanna's conference call video that addresses this question.
Writ is simply order of the court or a formal order.