TALLAHASSEE, Fla. (AP) — The parents of three transgender children in Florida are trying to get a federal judge to block a new law that bans gender-affirming care for minors, a signature policy of Republican Gov. Ron DeSantis as he nears his presidential campaign.

U.S. District Judge Robert Hinkle on Friday heard arguments from an attorney representing the three families in a case that argues they are being stripped of the right to make medical decisions for their children.

DeSantis has curtailed transgender medical treatments for minors in the state — often describing the issue in terms that...