Sunset provisions for government agencies

Texas law gives government agencies a twelve year life. Toward the end of that cycle the agency is reviewed, and changes are recommended, and the agency is either renewed or closed.

I imagine most agencies are renewed, but the regular evaluation would be helpful. My gf worked for a museum in California that worked on a zero based budgeting system, so each year, you started fresh and had to prove the necessity of your program and expenditures.