WASHINGTON (AP) — A bipartisan Senate effort to continue federal payments to insurers and avert a costly rattling of health insurance markets faces a dicey future. The uncertainty shows that last week's wreck of the Republican drive to repeal the Affordable Care Act hasn't blunted the issue's sharp-edged politics.

President Donald Trump is threatening to halt the payments in hopes of forcing Democrats to negotiate an end to the Obama-era law. The insurance industry and lawmakers from both parties say blocking the money would lead insurers to raise premiums for people buying individual policies...