The most important business at hand when the select committee meets this afternoon is the committee's highly anticipated decision on criminal referrals.

Sources familiar told ABC News the committee is preparing to urge the Department of Justice to prosecute Donald Trump for obstruction of an official proceeding and conspiracy to defraud the United States. Another criminal charge under discussion is insurrection, the sources said.

Chairman Bennie Thompson, D-Miss., tasked a subcommittee to make recommendations on criminal referrals and to also explore enforcement options for the five Republican lawmakers who ignored subpoenas to testify: Reps. Kevin McCarthy, Andy Biggs, Jim Jordan, Scott Perry and Mo Brooks.

Thompson has said to expect "five or six" categories of referrals, which means there could be referrals to several different entities such as the Justice Department or the House Committee on Ethics.

The extent of the criminal referrals, and who will be targeted, will be made clear in a matter of hours when the committee releases a separate, shorter report on the matter. Any referrals would be a largely symbolic move, though, as it's ultimately up to federal prosecutors whether to pursue charges.

-ABC News' Katherine Faulders

Rep. Liz Cheney will make a last high-profile stand against Donald Trump when the Jan. 6 committee holds its final public meeting in a matter of hours -- as sources say it's preparing to recommend the first-ever criminal charges against a former president.

It's cost the Wyoming Republican her political career to take on Trump, but she's said she has no regrets -- making the case she has a higher mission: to keep him from ever regaining the White House.

After voting to impeach Trump, and then accepting an invitation to serve on the select committee, she lost her No. 3 House GOP leadership position and ultimately, her congressional seat.

But in doing so, she also won unlikely supporters as she exposed what she called Trump's seven-point plan to steal the election and admonished her Republican colleagues who, she said, lacked the courage to do the same.

Click here for some of Cheney's most memorable moments.

The Jan. 6 committee is expected to release an executive summary of its findings after Monday’s meeting concludes.

"Following the business meeting, the Select Committee is expected to release certain materials, including an executive summary of the report, details on referrals, and additional information about witnesses who have appeared before the committee,” a select committee aide said in a statement on Sunday.

Select committee members have not yet provided DOJ investigators with copies of the committee's transcripts and witness interviews -- with members opting to do so at the end of their investigation.

-ABC News' Katherine Faulders

Monday is the last public meeting of the Jan. 6 committee, with ABC News learning members are expected to recommend criminal charges be pursued against former President Donald Trump in connection with the Capitol attack nearly two years ago.

Sources familiar with the committee’s deliberations say the recommended charges will include conspiracy to defraud the United States and obstruction of an official proceeding. The committee also is considering recommending Trump be charged with insurrection.

Members have been working against the clock to try to finish their work before Republicans take control of the House in the new year.

Any decision about whether to bring any charges against the former president would be left to the Department of Justice. DOJ has been conducting its own parallel investigation into the events of Jan. 6 and isn't obligated to act on congressional referrals.

-ABC News' Katherine Faulders

The Jan. 6 committee is also making referrals for four Republican lawmakers to the House Committee on Ethics for their failure to comply with subpoenas.

The members being referred, according to the executive summary of the committee's report, are House Republican Leader Kevin McCarthy and GOP Reps. Jim Jordan, Scott Perry and Andy Biggs.

"We asked multiple members of Congress to speak with us about issues critical to our understanding of this attack on the 2020 election, and our system of constitutional democracy. None agreed to provide that essential information," Rep. Jamie Raskin said. "As a result, we took the significant step of issuing them subpoenas based on the volume of information particular members possessed about one or more parts of President Trump's plans to overturn the election. None of the subpoenaed members complied."