It looks pretty bad for former National Security Adviser Mike Flynn. His decision to invoke his Fifth Amendment privilege and not testify before Congress makes a lot more sense in the light of the letter that House Oversight Ranking Member Elijah Cummings released this afternoon.

Flynn may have failed to disclose — or more accurately, lied about — at least one source of foreign income. According to Cummings’ letter, while seeking to renew his security clearance in February 2016, he apparently claimed that money he received from the Kremlin propaganda arm Russia Today actually came from American sources. There’s also the issue of his failure to register as a foreign agent while doing work for Turkey’s government.