The only role of government in Libertarian theory is to provide the police, the courts, and the military for national defense. All other services should be provided by private enterprise. We will not be able to reduce government to its only legitimate functions quickly. The process will take decades. We must proceed incrementally. A good way to proceed is to reduce the number of regulations incrementally over time.
Besides 170,000 pages of regulations, crony corporatism and corporate welfare are major problems. The United States government should never again bail out any corporations. The United States government should never again benefit one corporation or group or person over others by legislation.
For more on these subjects, see Economist Walter E. Williams YouTube video linked elsewhere on this web site.