The NCAA has reached a delicate moment: It must decide whether to punish states that have passed laws limiting the participation of transgender athletes by barring them from hosting its softball and baseball tournaments. Legislation requiring athletes to compete in interscholastic sports according to their sex at birth has been introduced in dozens of states this year, and governors have signed bills in Alabama, Arkansas, Mississippi, Tennessee and West Virginia. Last week, the NCAA announced a preliminary list of 20 schools being considered to host the early round of the NCAA softball tournament; the 16 regional sites will be announced when the field is unveiled May 16.