Such hearings will further underscore for agencies the importance that Congress places on creating high-performing government organizations.
Congress doesn't find importance in the creation of government organizations, and tends to make that known in their hearings. 
mnli hypothesis: Congress doesn't find importance in the creation of government organizations, and tends to make that known in their hearings.  premise: Such hearings will further underscore for agencies the importance that Congress places on creating high-performing government organizations.