The former president has a fast-approaching deadline to attempt to block the National Archives from releasing records from his White House that could shed light on his attempts to overturn the 2020 election results. And some of Trump’s closest aides have until Thursday to comply with a committee subpoena for their own records.

For a panel that has worked briskly but methodically to gather records from federal agencies and scoop up voluntary testimony from friendly witnesses, the expected fight from Trump is likely to be the first test of its legal and political muscle…

One tripwire will come Thursday, when subpoenas to former White House Chief of Staff Mark Meadows, longtime Trump aide Dan Scavino and Trump-world figures Steve Bannon and Kash Patel require them to supply documents to the panel. Committee Chair Bennie Thompson (D-Miss.) said Friday that he was prepared to issue “criminal referrals” to anyone who defied deadlines.

None of the four has publicly signaled how they will respond to the subpoena, and Patel has issued a statement criticizing the committee’s process. Repeated inquiries to representatives for Trump and to members of his inner circle about how they intend to respond have gone unanswered.