WASHINGTON — GOP presidential candidate Mitt Romney's new promise to restore the Medicare cuts made by President Barack Obama's health care overhaul law could backfire if he's elected.

The reason: Obama's cuts also extended the life of Medicare's giant trust fund, and by repealing them Romney would move the insolvency date of the program closer, toward the end of what would be his first term in office.

Instead of running out of money in 2024, Medicare says its trust fund for inpatient care would go broke in 2016 without the cuts. That could leave a President Romney little political breathing room to finalize his own Medicare plan.