While Robert Mueller recently set his sights on Hope Hicks and several other current and former top White House staffers, the special prosecutor hasn't forgotten about Michael Flynn, Donald Trump's former national security advisor.
Cummings and Engel said in their letter that "it appears that General Flynn violated federal law by omitting this trip and these foreign contacts from his security clearance renewal application in 2016 and concealing them from security clearance investigators who interviewed him as part of the background check process". That pressure appeared to mount Wednesday, when House Democrats released information they said confirmed that the elder Flynn omitted from his security clearance renewal application in 2016 that he had traveled to the Middle East in 2015 to meet with foreign leaders about a proposal to partner with Russian Federation in a plan to build nuclear reactors in Saudi Arabia.
In a letter sent to Flynn's former business partners, Reps.
Michael Flynn Sr said he never discussed sanctions with the Russian ambassador to the United States in the transition.
In his initial February filing, Flynn also omitted thousands of dollars in payments he took from three Russian companies.
The elected officials' letter quotes a response from Dr Thomas Cochran of ACU Strategic Partners, one of the companies involved in the proposed project, confirming that Mr Flynn travelled to the Middle East in 2015 to advance the construction of nuclear reactor and stating that Mr Flynn "firmly believed in the necessity of the project from a USA national security perspective".
"The American people deserve to know whether General Flynn was secretly promoting the private interests of these businesses while he was a campaign adviser, a transition official or President Trump's national security adviser", the House leaders wrote. The younger Flynn acted as the chief of staff at his father's company, attending meetings with his father and working with prospective clients.
It says he made trips to Egypt and Israel in 2015 as part of this plan.
Both Russia and Trump have denied any collusion and Trump has called it a witch hunt - but evidence has kept on emerging over the last few months.
Flynn's son, Michael Flynn Jr., also has declined to talk to the Senate intelligence committee, according to a person familiar with the matter. Flynn's firm, Flynn Intel Group, was paid about $500,000 by the businessman, Ekim Alptekin, between August and November.
The House Oversight Committee on Wednesday released letters exchanged with executives at the companies Flynn advised on the nuclear project.