WASHINGTON — Some Republicans are hoping lawmakers will soon wrap up investigations into Russian meddling in the 2016 election that have dragged on for most of the year. But with new details in the inquiry emerging almost daily, that seems unlikely.
Three congressional committees are investigating Russian interference and whether President Trump’s campaign was in any way involved. The panels have obtained thousands of pages of documents from Trump’s campaign and other officials, and have done dozens of interviews.
The inquiries are separate from special counsel Robert Mueller’s investigation.
Mueller can prosecute for criminal activity, while Congress can only lay out findings, publicize any perceived wrongdoing and pass legislation to try to keep problems from happening again. If any committee finds evidence of criminal activity, it must refer the matter to Mueller.
All three committees have focused on a June 2016 meeting that Trump campaign officials held in Trump Tower with a Russian lawyer and others. They are also looking into outreach by several other Russians to the campaign, including the involvement of George Papadopoulos, who pleaded guilty this month to lying to the FBI as part of Mueller’s inquiry.
New threads continue to emerge, such as a recent revelation that Donald Trump Jr. was messaging with WikiLeaks, the website that leaked e-mails from top Democratic officials during the campaign.
■ Senate Intelligence: The Senate intelligence panel, which has been the most bipartisan in its approach, has interviewed more than 100 people, including most of those attending the Trump Tower meeting.
Chairman Richard Burr of North Carolina and the panel’s top Democrat, Virginia’s Mark Warner, have said they plan to bring in Donald Trump Jr. The president’s son was one of several Trump campaign officials in the meeting.
The committee has looked broadly at the issue of interference, and called in executives from Facebook, Twitter, and Google, pushing them to take steps to prevent Russian election meddling on their platforms. Warner said the panel is still looking for more information from those companies, which were initially reluctant to cooperate.
Burr has said that he wants to wrap up the investigation by early spring, when congressional primaries begin. While there are many areas of bipartisan agreement on the meddling, it’s unclear whether all members will agree to the final report.
■ House Intelligence: In the House, Democrats hope the intelligence committee can remain focused on the Russia inquiry as the panel’s GOP chairman, Representative Devin Nunes, and other Republicans have launched new, separate investigations into Democrat Hillary Clinton and a uranium deal during President Barack Obama’s administration.
Nunes stepped back from the Russia inquiry in April after criticism that he was too close to the White House, but remains chairman of the committee.
On Nov. 30, the panel will interview Attorney General Jeff Sessions behind closed doors. Lawmakers are interested in Sessions’ knowledge about interactions between Trump campaign aides and Russians, and also his own contacts.
The top Democrat on the panel, California Representative Adam Schiff, told the Associated Press the committee has multiple interviews before the New Year. He said the Republican investigations into Clinton and Obama could be ‘‘an enormous time drain,’’ but they have not yet fully organized. He says the committee must be thorough and he doesn’t believe the Russia investigation should end soon.
■ Senate Judiciary: The Senate Judiciary Committee has also divided along partisan lines as Chairman Chuck Grassley, Republican from Iowa, and California Senator Dianne Feinstein, the panel’s top Democrat, haven’t agreed on some interviews and subpoenas.
But as in the House, the panel has proceeded anyway, conducting bipartisan, closed-door interviews with several people who were in the 2016 meeting.
The panel is showing recent signs that it is aggressively pursuing the investigation. The committee is the only one to have interviewed Trump Jr. And just before the Thanksgiving break, it sent Trump’s son-in-law, Jared Kushner, a letter asking him to be more forthcoming with the committee.
