USAC Rulebook – contains all sections related to all disciplines.  Make sure that when looking at the full rulebook you select the 2019 version

Collegiate Section – Chapter 6 covers all rules containing to Collegiate Cycling.  

Nationals Section – Chapter 7 covers all Nationals Qualifications and Eligibility Requirements.

There is not a current MWCCC rulebook.  The rules contained in it are now covered at the national level.