The Pentagon has a rule requiring retired officers to report income from foreign states. But the Pentagon says it can find no records that former National Security advisor Michael Flynn filed a report after he'd been paid by Russia for an interview on the Russian state television network RT and for dining with President Vladimir Putin at RT's 10-year anniversary gala in 2015.
Via Politico:
In a letter to the Republican and Democratic leaders of the House oversight committee delivered Tuesday, acting Army Secretary Robert Speer confirmed that Flynn — a retired lieutenant general — filed no documentation of his trip.
In response, House oversight committee Chairman Jason Chaffetz and Elijah Cummings, ranking Democrat on the committee, sent a letter that suggests Flynn may have inappropriately accepted payments from the Russian government or its agents in exchange for his attendance. Scrutiny is growing on Flynn’s trip and whether his payment violated the Constitution’s Emolument’s Clause, which prohibits any person holding an “office of profit or trust” in the federal government from accepting foreign payment. The prohibition has long been considered to apply for retired military officials.
As you recall, Flynn was fond of leading "lock her up!" chants on Trump's campaign trail.