The nation’s highest court heard more than three hours of arguments in two cases regarding state bans on transgender students playing on sports teams that are consistent with their gender identity. • Chief Justice John Roberts has signaled his skepticism for what he called transgender “exception” for sex-based laws.

The Supreme Court heard lengthy arguments Wednesday over whether President Donald Trump has the legal authority to impose most of his sweeping tariffs, a high-stakes test of his signature economic policy. The closely watched case could have major ...