SAN FRANCISCO — A federal judge Monday expressed skepticism that President Donald Trump’s decision to halt certain health law insurance subsidies would cause consumers immediate harm, as California and many other states claim in a lawsuit.

U.S. District Judge Vince Chhabria said he would issue a ruling in the case Tuesday.

Earlier this month, Trump announced that the administration would stop payments that compensate insurers for discounts given to low-income consumers to help cover their out-of-pocket expenses under policies sold on the Affordable Care Act’s insurance marketplaces. These subsidies are different from the tax credits many consumers get, depending on their income, to pay Obamacare premiums.