POLITICO's Inside Congress newsletter reports Sen. James Lankford is positioned to become the top Republican on the Senate Homeland Security Committee, where incoming Chair Maggie Hassan and the new Democratic majority promise an aggressive investigative agenda of the Trump administration; Lankford says he will push back if the majority goes beyond legitimate oversight. The newsletter also covers Sen. Rand Paul's move to the HELP Committee, the House's coming vote on the Epstein Files Transparency Act II, Josh Hawley's endorsement of a data center moratorium, and White House counsel Will Scharf's threat of a criminal investigation of Democrats' oversight plans.