The Social Union Framework Agreement (SUFA) and specific programs such as the National Child Benefit (NCB) represent joint government delivery of programming, and present many challenges for evaluators. Aside from attribution (which this paper argues is not really the central issue), the essential problem faced in the evaluation of these federal-provincial-territorial initiatives is that programming is becoming both more complex and heterogeneous. The concepts of joint planning and information sharing demand a high level of cooperation among program sponsors. A test of the rationale and effectiveness for agreements such as SUFA will be whether participating governments support detailed evaluations and performance measurement.