Describe the difference between the OMB, the CBO, and the GAO

The Congressional Budget Office (CBO)- is the primary congressional agency charged with reviewing congressional budgets and other legislative initiatives with budgetary implications.

U.S. Government Accountability Office (GAO)- Known as "the investigative arm of Congress" and "the congressional watchdog," GAO supports the Congress in meeting its constitutional responsibilities and helps improve the performance and accountability of the federal government for the benefit of the American people.

The Office of Management and Budget (OMB)- is the business division of the Executive Office of the President of the United States that administers the United States federal budget and oversees the performance of federal agencies.