Turley: Obama’s “Become The Very Danger The Constitution Was Designed To Avoid” Link: Professor Turley, the constitution, the system of separated powers is not simply about stopping one branch of government from usurping another. It’s about protecting the liberty of Americans from the dangers of concentrated government power. How does the president’s unilateral modification of act of Congress affect both the balance of power between the political branches and the liberty interests of the American people?