The CIA cannot lie to US legislators without committing a federal crime. They can choose not to disclose information to the public and “neither confirm nor deny” but they can’t knowingly tell a lie.
> They can and they have. Let's not pretend we live in fantasy land.
He didn't say they're incapable of lying to Congress, just that it's illegal for them to lie Congress. By the GP's statement, if they lied then they also broke the law.
Not this claim, but a recent example of the CIA lying to Congress with impunity.