There was an investigation and no one denies Flynn lied to the FBI.
The FBI investigation may not have been legit but that doesn't mean they didn't see anything wrong with his behavior, which was the claim in the article.
So if he lied that he drinks his coffee black when he actually drinks it with cream and sugar then your alright having him sentenced to jail ?
You are not very smart. Flynn Has repeated denied he lied. read his certification in support of withdrawing his plea. FBI themselves said he did not lie.