WASHINGTON, United States (AP) — President Donald Trump’s threat to stop billions of dollars in government payments to insurers and force the collapse of “Obamacare” could put the government in a legal bind.

Law experts say he’d be handing insurers a solid court case, while undermining his own leverage to compel Democrats to negotiate, especially if premiums jump by 20 per cent as expected after such a move.

“Trump thinks he’s holding all the cards. But Democrats know what’s in his hand, and he’s got a pair of twos,” said University of Michigan law professor Nicholas Bagley. Democrats “aren’t about to agree to dismantle the Affordable Care Act just because Trump makes a reckless bet.”

For months, the president has been threatening to stop payments that reimburse insurers for providing required financial assistance to low-income consumers, reducing their co-pays and deductibles.

Administration officials say the decision could come any day.

Playing defense, some insurers are pre-emptively raising premiums for next year.

For example, BlueCross BlueShield of Arizona this week announced a 7.2 per cent average hike for 2018. But there would likely be no increase if the subsidies are guaranteed, the company said. And BlueCross BlueShield of North Carolina earlier requested a 22.9 per cent average increase. With the subsidies, the company said that would have been 8.8 per cent.

The “cost-sharing” subsidies are under a legal cloud because of a dispute over whether the Obama health care law properly approved the payments. Other parts of the health care law, however, clearly direct the government to reimburse insurers.

With the issue unresolved, the Trump administration has been paying insurers each month, as the Obama administration had done previously.

Trump returned to the subject last week after the GOP drive to repeal the health care law fell apart in the Senate, tweeting, “As I said from the beginning, let ObamaCare implode, then deal. Watch!”

He elaborated in another tweet, “If a new HealthCare Bill is not approved quickly, BAILOUTS for Insurance Companies…will end very soon!”

It’s not accurate to call the cost-sharing subsidies a bailout, said Tim Jost, a professor emeritus at Washington and Lee University School of Law in Virginia.

“They are no more a bailout than payments made by the government to a private company for building a bomber,” he said.

That’s at the root of the Trump administration’s potential legal problem if the president makes good on this threat.