The wide-ranging argument at the Supreme Court touched on the approaches of other nations, the relevance of a previous ruling protecting transgender workers from workplace discrimination and the rights of parents.

The conservative-majority Supreme Court appeared likely to uphold Tennessee's ban on transgender-affirming health care for minors as it heard the most high-profile case of its term on Wednesday.

On Wednesday morning, a Nashville teenager and her parents filed into the U.S. Supreme Court along with Tennessee Gov. Bill Lee and ranking Republican lawmakers. They filled its wooden benches as the nation's top justices heard arguments in a case that could have wide-reaching impacts across the country.