to argue that Sessions won’t be sufficiently independent from President Donald Trump.
Aren't all the departments and secretaries (and in fact the entire Executive branch of the government) supposed to implement the will of the president? After all, the Constitution says:
"The executive Power shall be vested in a President of the United States of America."
and
"the Congress may by Law vest the Appointment of such inferior Officers, as they think proper, in the President alone, in the Courts of Law, or in the Heads of Departments."
As such, the proper role of every member of the Executive is to follow the directives of the sitting president.