Why? And again...he may not have known the scope. And even so...listen to you, blaming sessions. You only want Trump to control the investigation, nothing more.
That was the poor woman who when nominated to the bench, was stalled for two years by Senate Democrats simply because she was a black conservative.
I guess you never held a professional job and watched how other professionals get fired. It's always "I'd like you to submit your resignation". It gives the person another chance somewhere else, and it avoids the employer having to pay unemployment benefits for it. And yet it's a firing. Trump asked Sessions for his resignation and Sessions said so. Trump fired him. Nobody but the naive and the spin artists are fooled by it.