The ACLU and Immigration and Customs Enforcement (ICE) are locked in battle in a federal court in New York over the speed in which ICE should process responsive records in a FOIA request. ICE is seeking 15 months to process 385 of the responsive files, the ACLU has urged the court to require ICE to move faster. More can be found here.
Update: The Court has now reacted to the ICE request according to the AP. The judge has questioned the government's stand.
I'm guessing that the problem is that the non-FOIA people at ICE do not want to give FOIA staff either the files or the manpower to process them. In litigation, FOIA Offices usually do not drop a dime on difficult program offices, but my opinion is that this is what is really going on here.