WASHINGTON (AP) — Three leading Republican senators are promising to help millions of people who may lose federal health insurance subsidies if the Supreme Court invalidates a pillar of President Barack Obama's health care law.

Sens. Lamar Alexander of Tennessee, John Barrasso of Wyoming and Orrin Hatch of Utah are saying they have a plan to do that in a Washington Post opinion article posted online late Sunday.

They provide no detail on how much assistance they would propose, its duration or how to pay for it.

Nor do they say how they would address divisions among Republicans or Obama administration opposition to any weakening of the 2010 law.