Modern presidents have begun to rely less on their cabinets for advice and more on their political advisors. how has this weakened the process of checks and balances?

Cabinet officials have to be approved by the Senate.

Explanation:

president thomas jefferson hoped that the embargo act of 1807 would the united states by demonstrating to britain and france their dependence on american goods, convincing them to respect american neutrality and stop impressing american seamen. instead, the act had a devastating effect on american trade.