WASHINGTON — The House committee investigating the Jan. 6 attack on the Capitol issued new subpoenas on Monday for a half-dozen allies of former President Donald J. Trump, including his former national security adviser Michael T. Flynn, as it moved its focus to an orchestrated effort to overturn the 2020 election.
The subpoenas reflect an effort to go beyond the events of the Capitol riot and delve deeper into what committee investigators believe gave rise to it: a concerted campaign by Mr. Trump and his network of advisers to promote false claims of voter fraud as a way to keep him in power. One of the people summoned on Monday was John Eastman, a lawyer who drafted a memo laying out how Mr. Trump could use the vice president and Congress to try to invalidate the election results.
In demanding records and testimony from the six Trump allies, the House panel is widening its scrutiny of the mob attack to encompass the former president’s attempt to enlist his own government, state legislators around the country and Congress in his push to overturn the election.
Mr. Flynn discussed seizing voting machines and invoking certain national security emergency powers after the election. Mr. Eastman wrote a memo to Mr. Trump suggesting that Vice President Mike Pence could reject electors from certain states during Congress’s count of Electoral College votes to deny Joseph R. Biden Jr. a majority. And Bernard Kerik, the former New York police commissioner who was also subpoenaed, participated in a planning meeting at the Willard Hotel in Washington on Jan. 5 after backing baseless litigation and “Stop the Steal” efforts around the country to push the lie of a stolen election.
“In the days before the Jan. 6 attack, the former president’s closest allies and advisers drove a campaign of misinformation about the election and planned ways to stop the count of Electoral College votes,” Representative Bennie Thompson, Democrat of Mississippi and the committee chairman, said in a statement. “The select committee needs to know every detail about their efforts to overturn the election, including who they were talking to in the White House and in Congress, what connections they had with rallies that escalated into a riot and who paid for it all.”
The panel also issued subpoenas for Bill Stepien, Mr. Trump’s campaign manager, who supervised its conversion into a “Stop the Steal” operation; and Jason Miller, a senior adviser to the campaign who participated at the Jan. 5 meeting at the Willard, where associates discussed pressuring Mr. Pence not to certify the Electoral College results.
Also included in the group that received subpoenas on Monday was Angela McCallum, the Trump campaign’s national executive assistant, who left a voice message for an unknown Michigan state representative in which she said she wanted to know whether the campaign could “count on” the representative to help appoint an alternate slate of electors.
The subpoenas — which bring to 25 the number issued by the committee — require that the witnesses turn over documents this month and sit for depositions in early December. More than 150 witnesses have testified in closed-door sessions with the committee’s investigators.
In a statement on Monday evening, Mr. Kerik said his lawyer had accepted the committee’s subpoena, but he defended his actions. He said that Rudolph W. Giuliani, Mr. Trump’s personal lawyer, had brought him into the legal effort to investigate claims of voter fraud, but he argued that he had nothing to do with plans to try to sway Congress.
“I was not hired to overturn the will of the people — only to look into the integrity of the process and ensure that the results accurately reflected the will of the people,” Mr. Kerik said. “As to the events of Jan. 6, I was not involved.”
Mr. Flynn, Mr. Eastman, Mr. Stepien, Mr. Miller and Ms. McCallum did not immediately respond to requests for comment.
Understand the U.S. Capitol Riot
On Jan. 6, 2021, a pro-Trump mob stormed the Capitol, and there has been ongoing fallout.
The panel’s latest move indicates that it is zeroing in on how — in the days and weeks before a throng of Mr. Trump’s supporters stormed the Capitol and disrupted Congress’s counting of votes — the former president’s closest associates were planning an effort stretching from the Oval Office, the House and Senate to state officials across the country.
Critical to that push, investigators believe, was the meeting the day before the riot at the Willard Hotel. The Washington Post reported that Mr. Kerik paid for rooms and suites in Washington hotels as he worked with Mr. Giuliani on “Stop the Steal” efforts.
“They are really honing in on this strategy at the Willard Hotel,” said Barbara L. McQuade, a former U.S. attorney and a law professor at the University of Michigan. “If it’s a campaign war room, that’s one thing. But the question is: To what extent are they looking at blocking the certification of the election? The Eastman memo is a real smoking gun. It really appears to be a concerted effort here.”
Even as the committee ramps up its inquiry, it is facing stonewalling from Mr. Trump and many of his allies, whom he has directed to defy the panel based on a claim of executive privilege.
Mr. Trump has filed suit against the committee to keep secret at least 770 pages of documents concerning handwritten notes, draft speeches and executive orders, and records of his calls, meetings and emails with state officials. But the Biden administration has declined to support his claim to executive privilege, arguing that there is no such prerogative for documents related to an attempt to undermine democracy and the presidency itself.
The Justice Department is weighing whether to charge Stephen K. Bannon with criminal contempt of Congress after the House voted last month to recommend his prosecution for defying its subpoena. Another witness, Jeffrey Clark, a former Justice Department official who was involved in frenzied efforts to overturn the election, refused to cooperate on Friday.
Mr. Flynn attended a meeting in the Oval Office on Dec. 18 in which participants discussed seizing voting machines, declaring a national emergency, invoking certain national security emergency powers and continuing to spread the false message that the 2020 election was tainted by widespread fraud, the committee said. That meeting came after Mr. Flynn gave an interview to the right-wing site Newsmax in which he talked about the purported precedent for deploying military troops and declaring martial law to “rerun” the election.
Mr. Stepien helmed Mr. Trump’s re-election campaign, which urged state and party officials to affect the outcome of the election by asking states to delay or deny the certification of electoral votes and by sending multiple slates of the votes to Congress to allow a challenge to the results, the committee said. In particular, Mr. Stepien supervised a fund-raising effort that sought to profit off the election challenges and promote lies about voting machines that campaign staff had determined to be false, the committee said.
Mr. Trump and the Republican Party raised $255.4 million in the eight weeks after the election as he promoted unfounded accusations of fraud.
Mr. Eastman has been the subject of intense scrutiny in recent weeks after it was revealed that he wrote a memo to Mr. Trump suggesting that Mr. Pence could reject electors from certain states. Mr. Eastman is also reported to have participated in a briefing for nearly 300 state legislators, during which he told the group that it was their duty to “fix this, this egregious conduct, and make sure that we’re not putting in the White House some guy that didn’t get elected,” the committee said.
He met with Mr. Trump and Mr. Pence to push his arguments, participated in the meeting at the Willard and spoke at the “Stop the Steal” rally on the Ellipse on Jan. 6, before the Capitol assault. As violence broke out, he sent a message blaming Mr. Pence for not going along with his plan.