"[After Shepard asks her what she would have done if she was in charge of Project Lazarus] To start, I would've implanted you with some type of control chip. But the Illusive Man wouldn't allow it. He was afraid it might affect your personality, alter your character somehow. He wouldn't let us do anything that might limit your potential in any way."
January 1, 1970
https://en.wikiquote.org/wiki/Mass_Effect_2