(AP) — Joe Biden is championing the Obama administration’s signature health care law as it goes before the Supreme Court in a case that could overturn it. The president-elect is delivering an Affordable Care Act speech on Tuesday, the day the high court will hear arguments on its merits. The Supreme Court ruled eight years ago to leave intact the essential components of the law known as Obamacare. But the court is now controlled 6-3 by a conservative majority. Biden’s speech reflects the importance he is putting on health care as he prepares to take office in January amid the worst pandemic in more than a century.