Why did the founders set it up to where the President would appoint the AG?

[elleng]

8. Washington held his first full cabinet meeting on February 25, 1793,

with Secretary of State Thomas Jefferson, Secretary of the Treasury Alexander Hamilton, Secretary of War Henry Knox, and Attorney General Edmund Randolph.

Washington rewarded Randolph for his support. Randolph was appointed as the first U.S. Attorney General in September 1789, maintaining precarious neutrality in the feud between Thomas Jefferson (of whom Randolph was a second cousin) and Alexander Hamilton. In President Washington’s cabinet, as in the ratification dispute of 1787–1788, Randolph tried to bring people together, rather than jumping to hasty conclusions and ignoring the potential costs in pursuit of self-righteous ideological purity.

When Jefferson resigned as Secretary of State in 1793, Randolph succeeded him to the position. The major diplomatic initiative of his term was the Jay Treaty with Britain in 1794, but it was Hamilton who devised the plan and wrote the instructions, leaving Randolph the nominal role of signing the papers. Randolph was hostile to the resulting treaty, and almost gained Washington's ear. Near the end of his term as Secretary of State, negotiations for Pinckney's Treaty were finalized.

https://en.wikipedia.org/wiki/Edmund_Randolph