In a nutshell, GAO currently stands at an important crossroads in its history and in its ability to provide the unique support the Congress and the American people expect from it.
The American people expect a lot from the GAO. 
mnli hypothesis: The American people expect a lot from the GAO.  premise: In a nutshell, GAO currently stands at an important crossroads in its history and in its ability to provide the unique support the Congress and the American people expect from it.