Dearborn is advocating for circumventing traditional communication between the White House Counsel and the Attorney General. The reason for the longstanding policy that limits communication between the White House and the Department of Justice (DOJ) is because it maintains clear lines of accountability and prevents inappropriate or politicized influence on the DOJ by the White House. Changing this policy would politicize (or weaponize) the DOJ in a very literal sense, as well as undermine the independence of the DOJ. Moreover, if you have more people involved in the communication chain, you’re diluting responsibility and making it more difficult to track who is responsible for specific decisions or actions.
Full contextual analysis of Section 1.1: White House Office here.