Per CNN and the Washington Post and as already reported on Kos:

The Justice Department warned the Trump administration last month that Michael Flynn misled administration officials regarding his communications with the Russian ambassador to the United States

The real importance of this revelation is this: Don’t let Michael Flynn be the fall man for the administration in this and don’t let Mike Pence play innocent. Even in the unlikely event that they weren’t directly involved in Flynn’s illegal actions, Trump and Pence both knew what Flynn had done for at least a month and still lied to the American people on his behalf.

Any claim of anger for being deceived on the part of Mike Pence is simply more lies. He was informed of this long before the press made the story public. The real question for them is why are the president and vice-president both lying to protect Russian interference in our sovereignty?