WASHINGTON (AP) — Conservative justices holding the Supreme Court's majority seem likely to sink President Joe Biden's plan to wipe away or reduce student loans held by millions of Americans.

In arguments lasting more than three hours Tuesday, Chief Justice John Roberts led his conservative colleagues in questioning the administration's authority to broadly cancel federal student loans because of the COVID-19 emergency.

The plan has so far been blocked by Republican-appointed judges on lower courts.

It was not clear that any of the six justices appointed by Republican presidents would approve...