The New York Times reports: Investigators working for the special counsel, Robert S. Mueller III, recently asked the White House for documents related to the former national security adviser Michael T. Flynn, and have questioned witnesses about whether he was secretly paid by the Turkish government during the final months of the presidential campaign, according to people close to the investigation.

Though not a formal subpoena, the document request is the first known instance of Mr. Mueller’s team asking the White House to hand over records.

In interviews with potential witnesses in recent weeks, prosecutors and F.B.I. agents have spent hours poring over the details of Mr. Flynn’s business dealings with a Turkish-American businessman who worked last year with Mr. Flynn and his consulting business, the Flynn Intel Group.

The company was paid $530,000 to run a campaign to discredit an opponent of the Turkish government who has been accused of orchestrating last year’s failed coup in the country.

Investigators want to know if the Turkish government was behind those payments — and if the Flynn Intel Group made kickbacks to the businessman, Ekim Alptekin, for helping conceal the source of the money.

The line of questioning shows that Mr. Mueller’s inquiry has expanded into a full-fledged examination of Mr. Flynn’s financial dealings, beyond the relatively narrow question of whether he failed to register as a foreign agent or lied about his conversations and business arrangements with Russian officials. [Continue reading…]