Originally Posted by JLyon
you do not need the rule. All you need to use is USTA rules that forces you to choose a team once you advance to the sectional level, so you could not play for 3 different sectional level teams.
Local, state and sectional rules have the ability to tighten USTA rules and most do to tweak them for their own use. They just can't make them more lax and all changes have an approval ritual they have to go through, including legal clarification.