The Australian Greens have today urged the Immigration Minister to relinquish his role as the legal guardian of 26 Vietnamese unaccompanied children in detention in Darwin and release them into the community. “The Minister must cease being the legal guardian of all unaccompanied children and be replaced by an independent advocate who can act in their best interests and stand up for their welfare,” Greens’ immigration spokesperson, Sen. Sarah Hanson-Young, said. “This desperate plea in a letter today from a…