The letter from Cummings, the ranking Democrat on the House oversight committee, and Engel, the ranking Democrat on the House foreign affairs committee, is the latest to call attention to potential problems with what Flynn reported to the U.S. government about his foreign travel, contacts and business after he left the Defense Intelligence Agency in August 2014.
Federal and congressional probes have been looking closely at Flynn's foreign travel and contacts as part of investigations into Russia's meddling in the 2016 presidential election and any possible collusion with associates of Trump or his campaign.
Separately, federal investigators have been scrutinizing Flynn's work for a Turkish businessman and the Defense Department's inspector general has been looking into whether Flynn failed to get U.S. government permission to receive foreign payments. Among those payments was more than $33,000 he received from RT, the Russian state-sponsored television network that U.S. intelligence officials have branded as a propaganda arm of the Kremlin.
In their letter, Cummings and Engel said they believe Flynn was not forthcoming about a trip he took to the Middle East in the summer of 2015.
They cited a recent Newsweek report that Flynn flew to Israel and Egypt that summer as part of an effort promoting a U.S.-Russian partnership to construct nuclear reactors for civilian power needs. They also point to an inconsistency in what Flynn said during June 10, 2015, testimony before a House Foreign Affairs subcommittee and what Flynn later reported to security clearance investigators about his foreign travel.
During the House committee hearing, Flynn told lawmakers he "just came from a trip — fairly extensive trip to the Middle East," during which the issue of developing nuclear energy in the region came up. But Cummings and Engel said it "does not appear that General Flynn disclosed this trip or any foreign contacts as part of his security clearance renewal process," noting that intentionally concealing such information from a security clearance form is a felony.
Cummings and Engel also raised questions about another trip to the Middle East in October 2015, which Flynn did report as part of his security clearance review. The review took place in the early months of 2016.
The lawmakers say Flynn recorded the trip on his security clearance questionnaire and later told security clearance investigators that he traveled to Saudi Arabia with a friend to speak at a conference, stayed at a hotel called the King Khaled International Hotel and had the trip paid for by a "work sponsor."
But congressional investigators could not confirm the existence of such a hotel, though they note the airport in Riyadh shares that name. They also could not find any evidence of a conference that Flynn would have attended during the time frame, noting that three speakers' bureaus that Flynn worked with did not report being involved with the trip or a conference in Saudi Arabia.
In financial disclosures Flynn provided earlier this year to White House and government ethics officials, the former military intelligence official said he had served as an adviser between August 2015 and last December to an entity identified as X-Co Dynamics/Iron Bridge Group. X-Co Dynamics is a Virginia-based consulting firm headed by former U.S. Rear Admiral Michael Hewitt, whose board of retired military advisers included former National Security Agency chief Keith Alexander and former Marine Corps General James "Hoss" Cartwright, who was prosecuted last year for lying to the FBI in a leak investigation.
Flynn did not detail his work with X-Co Dynamics in the disclosure, but a Newsweek report earlier this month alleged that he flew to Israel and Egypt in summer 2015 as part of a private effort by the firm to advance the idea of a massive ring of atomic reactors that would be built by the U.S. nuclear industry and the Russian government and largely bankrolled by Saudi Arabia.
According to an internal memo obtained by Newsweek, the project was the brainchild of ACU Strategic Partners, a U.S. firm promoting the idea of a partnership between the U.S., Saudi Arabia, Egypt, Jordan, Kuwait and the United Arab Emirates to build and operate 40 nuclear power reactors across the Middle East. Russia would have financial incentive to join the project, according to the ACU plan, because it would take the lead in building the plants and providing a burial ground for their waste.
Newsweek reported that Flynn's role in the project, via X-Co Dynamics, was to design and put into play "a vast security network for the entire enterprise." Flynn's financial disclosure did not show any financial payment from X-Co Dynamics for his involvement.
Newsweek reported that the proposed deal was scuttled by the Obama administration. Saudi Arabia later signed a deal with Russia's nuclear agency, Rosatom, to build 16 reactors.