You might want to read this ~ one of the countries is Australia
Excellent article. I do however see a role for congress in American foreign affairs. American citizens with foreign interests have no procedural redress if they disagree with American Foreign Policy. Who should they go to? The courts are not beholden to them. The State Department is not beholden to them. Only elected officials can champion an issue they see as essential. The question then becomes one of qualifications. Who is qualified to formulate alternative policy? Think tanks, corporations, NGOs or activists all have a place in a relatively confused policy making matrix. Democracy is messy, but from it springs unparalleled beauty. That's why it works.