According to them:
A Department of Peace will work to:
-- Provide much-needed assistance to efforts by city, county, and state governments in coordinating existing programs; as well as develop new programs based on best practices nationally
-- Teach violence prevention and mediation to America's school children
-- Effectively treat and dismantle gang psychology
-- Rehabilitate the prison population
-- Build peace-making efforts among conflicting cultures both here and abroad
-- Support our military with complementary approaches to peace-building.
-- Create and administer a U.S. Peace Academy, acting as a sister organization to the U.S. Military Academy.
Last I looked at the constitution, the role of the government was to protect against the unlawful initiation of force - through the police, settle disputes - that's the courts, and defend the borders - that's the armed forces.
The government has no mandate to build peace-making efforts among conflicting cultures both here and abroad.
I hope that there are still sensible people in congress who will realize that a department of peace is a lovely feel good concept but that it has no role in government.