President Donald Trump on Tuesday threatened to withhold federal funding from California over a transgender athlete’s participation in an upcoming sporting event — the latest example of the president trying to use funding as leverage to enact his agenda.

The California Interscholastic Federation said it was extending access for more “biological female” athletes to participate in the championship meet this weekend. The federation announced the change Tuesday after President Donald Trump posted on his social media site about the participation of a trans athlete in the competition.