1) Obama still warned about Flynn.
2) Cummings warned Pence that Flynn was acting as an unregistered foreign agent, which is illegal and worthy of investigation.
3) Yates warned that Flynn would be susceptible to Russian blackmail, which is worthy of investigation.
And, for the icing:
4) Michael T. Flynn told President Trump’s transition team weeks before the inauguration that he was under federal investigation for secretly working as a paid lobbyist for Turkey during the campaign, according to two people familiar with the case."
https://www.nytimes.com/2017/05/17/us/politics/michael-flynn-donald-trump-national-security-adviser.html