house of representatives seal*(Via Chicago Tribune) – Defying threats from Senate Democrats to reject all attempts to curtail President Obama’s healthcare law, the Republican-led House on Saturday amended a government-spending bill to delay the law for a year, increasing the likelihood of a government shutdown Tuesday.

The 231-192 vote during a rare Saturday night session was a key component of the latest plan by House Speaker John A. Boehner (R-Ohio) in response to the Senate’s action Friday to pass a government-spending bill without GOP-favored provisions aimed at undermining the Affordable Care Act.

The House also voted 284-174 to repeal a tax that the healthcare law imposes on medical-device manufacturers. A sizable number of Democrats have also supported repealing that tax in the past.

Separately, the House, voting 423-0, approved a bill to ensure members of the U.S. armed forces would continue to receive paychecks in the event of a shutdown, which will be triggered if Congress fails to agree on a spending measure by Monday, the end of the federal fiscal year.

Get MORE of this story at Chicago Tribune.