Federal Government can be downsized one agency at a time if the U.S. Government through Congress would allow it. Here is a free e-book from the Cato Institute that details how to do it. Civically, citizens should be informed about their U.S. Executive, the White House, and its power through its agencies to regulate and intervene in commerce and liberty. Please keep this e-book by Chris Edwards of the Cato Institute handy in the reference library.
To access e-book: Downsizing the Federal Government | Chris Edwards | Cato Institute.