“The government will suffer irreparable harm absent a stay. Once the government discloses the secret grand-jury records, their secrecy will irrevocably be lost,” Solicitor General Noel Francisco wrote. “That is particularly so when, as here, they are disclosed to a congressional committee and its staff.”
Red alert, red alert! Congress might learn the truth about all the stuff that has heretofore been hidden from the public.
At issue for House Democrats is whether Trump lied in his written testimony to the Mueller team. House Democrats sought access to the information last year as they mulled impeaching Trump.
Congress is not necessarily granted access to such materials, but a Nixon-era precedent was set when the courts ruled an impeachment investigation a "judicial proceeding." In the current case, both the federal court and the appeals court panel followed that precedent to rule in favor of House Democrats gaining access to the materials.