Its odd to me that the BCA 'isn't supposed to be' the governing body for professional pool, yet, they do rank the professionals with their own system, which later determines who goes where. And they are the only association in North America that the WPA will sanction, so, it sounds like they are actually governing something after all.
Between that, and the HOF, and the rule books, it looks more to me like they cant decide exactly what they want to govern.
The WPA exists because of generous help from the BCA when the WPA was formed. The BCA ranks PLAYERS making no distinction between professional and amateur. When a WPA event is scheduled then North America gets a certain number of spots and the BCA is tasked with nominating players for those spots. So yes the BCA "governs" that list and those spots.
From what I understand the BCA's list is comprised of a formula that takes into account the various INDEPENDENT events around America to determine where players are ranked. The BCA does not sanction these events, does not extract a fee, or otherwise interfere in the events. IN fact if I remember right the BCA itself doesn't even administer the list. Possibly a forum search would turn up how the list is calculated. Jerry Forsyth probably can clear it it up quickly.
In any event though the list ONLY pertains to WPA events and not towards anything that happens internally on the tournament scene in the United States. The Mosconi Cup team is also chosen based on this list and that is Matchroom's decision to use it.
Any player professional or amateur can play in all the independent events and accrue points for the rank list if it is their desire to play in WPA events and on the Mosconi Cup team.
So if you consider the existence of a ranking list that is independent from the players, i.e. one that they don't control but which is used to determine participation in world events as governance then yes I concede that in this limited sense the BCA governs the players.
Which is why I have long advocated to the WPA that they create a class of "world pros" which owe no allegiance to any country's amateur organizations and who earn their places in world events by their performance only in world events.
Ronnie Alcano won the world championship by going through the qualifiers. He was not ranked high enough in his home country to be awarded a spot. My opinion is that there should be a place for players like him who do not want or cannot go through their home country's organizations. Maybe the qualifiers, maybe hold qualifiers on each continenet, I don't know. But once in the event they have to do well enough to achieve enough rank to ensure future spots. If not then back to the qualifiers.